r/Histology

BCM
▲ 32 r/Histology+1 crossposts

BCM

This image is an immunofluorescent micrograph showing the intestinal epithelium.Proliferating Cells: The red-stained cells are proliferating cells, which are actively dividing to repair damage or renew the tissue.Intestinal Stem Cells: The bright green cells at the base of the crypts represent the stem cell compartment, which gives rise to new epithelial cells.Cell Nuclei: The blue staining highlights the nuclei of all cells within the tissue.Tissue Function: This specific view of the intestinal tract highlights the dynamic process of cell renewal and repair, which is critical for absorbing nutrients and defending against pathogens.

u/AshuArtsBiological — 1 day ago
▲ 1 r/Histology+1 crossposts

[Analyse de texte / Histoire] Question sur le sens du pronom « lui » dans un texte sur l'affaire Dreyfus

Bonjour à tous,

Je me permets de vous solliciter car je suis actuellement en train de lire un texte historique et académique sur l'affaire Dreyfus et le célèbre « J'accuse » d'Émile Zola, et une subtilité contextuelle me pose question.

Voici le passage concerné :

>

Concernant l'expression « contre lui », j'hésite entre deux interprétations pour l'antécédent du pronom « lui » :

  1. Émile Zola lui-même : Zola aurait délibérément provoqué l'armée et le gouvernement pour que ces derniers intentent un procès pour diffamation contre lui-même (perspective de stratégie judiciaire). Sur le plan grammatical, le sujet de la proposition étant « un article », il serait tout à fait correct de désigner Zola par « lui ».
  2. Ferdinand Walsin Esterhazy : Le pronom renverrait à Esterhazy, qui était le sujet de la phrase précédente. L'objectif ultime de l'article aurait donc été de traduire à nouveau le véritable coupable devant la justice (perspective de révision du procès).

En pesant à la fois la structure grammaticale de la phrase et la réalité historique de l'époque (notamment le fait qu'Esterhazy venait d'être acquitté et que l'autorité de la chose jugée empêchait de le rejuger directement), selon vous, quelle interprétation est la plus juste, la plus naturelle ou la plus couramment admise par les locuteurs natifs et les historiens ?

Je vous remercie d'avance pour le partage de vos précieuses lumières !

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u/Jackthe04 — 1 day ago

Oops

Apparently coughing while changing the paraffin on the processor is ill advised. Anybody know how to get paraffin off of shoes?

u/scubadude2 — 3 days ago

Any advice

I’m over trying to get into histology. Originally,I wanted to be a pathologist assistant but I wasn’t so good with the sciences in college and didn’t want to do the extra steps to get into pa school. So I came across histology which I was interested in because it’s in the same realm and also less schooling. So I received a records management job at a bio pharmaceutical company that has a histology department. I express my interest to many including my senior manager and regular manager. They spoke to the manager of the histology department and gave me permission to shadow for a month. I loved watching the process for cryosectioning and paraffin sectioning. After the few weeks were done I asked on the last day if the department is conducting training on the job again like they did previously. They said no due to the heavy load of work. They were hiring I asked if I could apply, no I needed certification. So I looked in the histology programs online because there are none here in Jersey. I completed biology 1 but still needed chemistry. So I finally took and passed chemistry through Hartford community college. I was prepared to submit my application but of course the program costs a little over $1000 monthly. I’m still a contractor at the pharmaceutical company I don’t have it that right now. So I tried to apply to UND for this summer program but the deadline passed. The admission person said I still needed chemistry and algebra for the program.
I refuse to retake chemistry again and I just want to go into the program. I’ve been looking for grossing jobs, applying to histology jobs, and looking for specimen jobs. But they’re either 2 hours from me or require more experience. I’m clueless now. Any advice? Anyone knows if Hartford takes student aid?

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u/Big-Maintenance-7916 — 3 days ago

Weighted Kimwipe Topper Done

Last week I posted about this topper I made for Kimwipe boxes and had really positive responses. Now you can see it here along with many other tools I have made for the lab!

This thing has real steel inside so it is heavier than it looks and will definitely hold down the box when you pull the tissue out. Weighted Kimwipe Topper

u/ApprehensiveCarrot87 — 3 days ago

Cryostat temp for mouse tongue

Does anyone know the best temperature for cutting mice tongue tissue on the cryostat? I’ve adjusted from -22 to -11 and the OCT is constantly crumbling into pieces once it hits the blade and I’ve never had this problem before.

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u/bananabug2006 — 3 days ago

Scientists?

Do you guys consider yourselves scientists? I’ve always reserved that title for more research positions but I wanted other peoples opinions on it. My coworker consider himself a scientist but my other one says he’s not.

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u/Feeling-Membership63 — 4 days ago
▲ 3 r/Histology+1 crossposts

HT 1 & 2 full

Hello,

I’m just making a post to see if anyone has experienced something similar. My goal is to do the Histotech program AA at Mt Sac. My registration date was May 13th but before I even got a chance to register all the seats + waitlist was full. My question is do you think I have a chance of getting into the class? I’m waiting until jun 12 to see if maybe someone doesn’t pay their fees on time & gets dropped & maybe I’m able to secure a seat this way? I also got all my general Ed done at a different community college so there are no extra classes I “need”. Thanks for the input

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u/Commercial_Drawer783 — 3 days ago
▲ 499 r/Histology

Cross stitch

Just wanted to show off my cross stitch I made my program director/professor as a thank you gift. It took me about 47 hours. It’s based on the photo in the last slide

u/alrj1378 — 8 days ago

Question abt becoming HT or HLT

So I originally thought I wanted to go into research (PhD track), however my current job has made me not want to pursue academia in that way anymore. Histology has always been extremely interesting to me and has the parts of science that drew me to research. My main issue is finding the most cost effective way to sit for the exam. I have a bachelors degree and have been working in a research lab for the past year, however it isn’t a “histology lab”. It covers a lot of the techniques that are required, but certain techniques seem to be done different in this lab vs what would be done in a histology lab. Has anyone else gone down “route 2” coming from a lab that isn’t considered a histology lab? I am hoping to avoid getting a masters, as I cannot afford to do so.

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u/medulla-oblong — 7 days ago

Weighted kimwipe topper

I am currently designing a weighted topper for the kimwipe box for the lab. This would make sure the box goes down as you take wipes out.

Would there be any interest here for this?

u/ApprehensiveCarrot87 — 9 days ago

[Respost] Microtome help - can't seem to get bone sections right

[Reposted to include H&E staining for better visualization]

Pictured: murine lumbar spine H&E

I'm currently working as an RA in an academic lab and need to get better at longitudinal bones sectioning. Previously bone marrow was crackling too much, but it seems to be a bit better as long as the paraffin block is chilled a bit before sectioning. However, trabecular bone looks like its peeling away while the gap left behind maintains the correct shape. Cortical bone looks like its wants to wrinkle, too.

Really hoping this is a fixable, technique issue and not a processing thing. Any advice welcome!!

- fixed 48hr in PFA prior to decal

- 12 day decal in EDTA, confirmed with Xray

- 5-7um sections

- 6 degree clearance angle

- ice water-soaked gauze and 10% formic acid swab pressed against block between sections

- 40C degree water bath for ~10sec before scooping onto slide

- placed on slide warmer until water dries out

- 55C orienter is available to briefly melt paraffin and unwrinkle samples, but it seems to cause more problems with maintaining morphology than it fixes

u/CalligrapherHuge6821 — 8 days ago

Skill Demo Interview Advice + my background if you want to read extra

Hey everyone,

So, I applied for a per diem histotech position at my local hospital. I was feeling alright about this until I scheduled the interview over the phone, because they said to expect it to be 1 hour to 1 hour and a half long, and that there would be a skills demonstration.

I have no experience with a "skills demonstration" during the interview process. What should I expect? Any advice or anything I should look out for? Does someone actually sit there staring you down the entire time? 😭

When I first heard them say it, I started freaking out and almost told them never mind.

I've been working in a histology lab since 2022. For the first year, I was more of a lab assistant, accessioning and cutting frozen. After that, I really started getting into the histotech work, like using the microtome. The only issue was that I was one of the later-morning techs, and our volume was low, so most of the embedding was already done. I embedded only a handful of times at this first job.

I started a 2nd histo job about a year ago now, and have embedded more than I did at my previous job within the first couple months, and our volume is maybe 4x more than that of my previous job. I feel waaaay more confident embedding now, but I can definitely work on my speed, and my manager agrees 😅. My supervisor said I should be able to embed a whole basket (about 72 cassettes) in 30 minutes. Depending on whether the tissue is wrapped in those annoying mesh bags and papers, I can get the whole basket done within 30-40 minutes, but more towards 40 minutes.

My supervisor says my microtomy is good, but sometimes I feel like I have good and bad days cutting. Bad days, meaning I can't get my biospies to ribbon, or I have an ice full of crunchy hard tissue that feels like it takes me a day and a half to get through

moral of the story, I'm terrified of this testing part and feel inadequate

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u/Ghiblipuff7 — 9 days ago

First time doing PAS staining

Hi everyone of this lovely sub, thank you so much for all your advice for my previous posts. I'm now trying PAS stain on my mice livers to see if the droplets I'm seeing are lipid or glycogen deposits. Firstly in my stain i see positive staining favours one side of the cell- is that normal or is it a problem with the staining? I'm guessing the areas positive for glycogen be the more magenta areas vs the unsaturated purple? Any advice or comments on my stains are much appreciated!

Here's my protocol briefly: deparaffinize & hydrate, PAS for 8 min, rinse in tap and distilled water, Schiff reagent 20 min, 10 min tap water, haematoxylin for 2 min, acid ethanol for 5 seconds, tap water 15 min, distilled water, dehydrate & clearing

u/kiebie69 — 8 days ago

Embedding speed

Hello everyone! I’m wondering how your lab would deal with bringing up someone’s speed during embedding? We have a (supposedly) seasoned histotech who is newish to our lab, that regularly takes an extremely long time to embed. Just the other day for example they took about 2.5 hours to embed roughly 50 blocks. We’ve brought it up to our supervisor before and all they do is complain about the person behind their back and never actually address the issue with them.

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u/Real_Cycle4384 — 10 days ago

losing too much tissue when removing coverslips?

any tips to minimize tissue loss when removing coverslips? I'm staining for miRNA, and the kit I'm using suggests a coverslip during the antigen retrieval step (20 min in chamber placed in 98C waterbath)

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u/tangycrossing — 8 days ago