I'm going to culture NK cells. Some protocols say irradiated autologous or allogeneic feeder cells are needed. However, we don't have irradiators. Does it mean I can't get the feeder cells I need? Is there any other equivalent way?
The other standard method for growth-inactivation of feeder cells is treatment with mitomycin C.
I want to distinguish activated B cells from NaÏve B cells in mouse. I've learned that, in humans, CD27 is the ideal marker. However, I'm not sure whether it's the same in the mice. If not, which...
02 March 2015 5,689 3 View
I am interested in immune tolerance. Are there any experimental protocols for incuding immune tolerance to an immunogenic protein? Thanks for your help!
07 August 2014 8,597 1 View
there are millions of proteins are immunogenic, however there are only several used as model antigens in immunological studies. One of the best known is chicken ovalbumin. Could someone tell me...
07 August 2014 8,104 11 View
07 August 2014 6,746 2 View
I am going to isolate murine NK cells. I see some research papers using RAG mice to isolate the cells. Why? Is it because there are more NK cells in the spleens of RAG mice? And what's the percentage?
11 December 2013 5,969 5 View
I'm using hydrocortisone to culture murine cells. The stock I use is 50 μg/ml. I store it at -20°C in small aliquots. However, I often found crystals in the media under microscope. Has anyone had...
08 September 2013 4,417 2 View
I'm doing panning to deplete T&B cells with CD3/CD19 antibodies. CD19 antibodies can remove B cells effectively, however, hamster anti-mouse CD3e can barely adsorb T cells. Both antibodies were...
08 September 2013 9,254 6 View
When doing Flow Cytometry, I used B16 cells as negative control of IFN-gamma and Granzyme B. But apparently, the sizes of B16 and lymphocytes are so different. Is this allowed? Or, I can only use...
04 May 2013 4,269 4 View
I'm culturing murine NK cells in vitro. However, the second day post isolation, 80% or more of the cells are dead or apoptotic. The medium I used was a-MEM supplemented with 10% FBS, 10 ng/ml...
03 April 2013 6,534 9 View
I'm using Percoll to remove dead cells from cultured lymphocytes, but I don't know which density gradients to use and which layers to collect. Can anyone give me some advice?
02 March 2013 2,402 3 View
I have carried out MFC experiments on three different volumes, 50, 500 and 1000 mL of wastewater. Results after MFC treatment shows that TDS and EC are more in larger volumes of water i.e. TDS and...
09 August 2024 9,621 0 View
Hello everyone! I observed in my culture (htert-RPE1 cells) an orange- red particle at the bottom of the dish. It is visible to the naked eye as a very very small red dot. Could it be a...
09 August 2024 2,824 3 View
I am working in fungal fermentation of soybean meal and there is bacterial growth in them at times. I am trying to quantify fungal cell counts and bacterial cells; but I haven't been able to do at...
07 August 2024 7,535 4 View
I would like to understand potential safety concerns while handling SEB in the lab. Especially while working in animal house facility. Would like to know precautions for handling. Sigma MSDS...
07 August 2024 6,034 3 View
Hi, I have a question about normalizing the MTT OD values for doing the statistical analysis. So, if we have 3 different plates and we call them 3 different replicates, so, first we would...
07 August 2024 8,106 4 View
Previously when I co-coluture anti-CD19(FMC63) CAR-Jurkat with Raji with E:T=5:1, Jurkat can eliminate Raji in 24h. However, when I test another CAR construct, although I can dectect totally CD69...
06 August 2024 641 2 View
After immunohistochemistry of previously fixed in PFA and EtOH and then frozen 20 μm sections of zebrafish brain, DAPI staining is very weak (right) compared to the same sections stained without...
05 August 2024 9,637 2 View
I have tried several times to isolate lymphocytes from mouse spleen, but all attempts have been unsuccessful. I tried most available protocols. I used different dissociation media (HBSS with Ca...
04 August 2024 9,913 7 View
I have protein-membrane simulations (PDB, PSF, DCD) and have noticed that water molecules near the protein are not visible in the simulations. How can I fix this issue? Is there a way to place the...
04 August 2024 1,200 2 View
Hi, I am isolating monocytes from the bone marrow using the Mouse Monocyte EasySep kit. I want to treat these cells and monitor expression of specific markers over the course of 10 days. I will...
04 August 2024 7,282 2 View