Minimal cell number for CBA or Luminex?

Can someone tell me what is the minimal number of cells (for example CD8 T cells) that I have to put in a well culture. Is it realistic to measure the released cytokines from 2500 stimulated T...

31 January 2016 1,902 3 View

How do I concentrate RNA or cDNA?

We extracted RNA from blood cells to analyze gene expression. We now have an aliquot with 500ng of the extracted RNA to make the reverse transcription (RT). The problem is that this 500ng are in a...

22 September 2015 7,739 14 View

How can I improve standard curves for ELISA kits?

I am using an ELISA kit to measure APRIL in human serum. This kit provides a liofilyzed standard that we have to reconstitute and make dilutions in the plate. The curve is supposed to go from 0.78...

07 January 2015 9,385 5 View

How can I increase reads (OD values) on ELISA tests?

I am using an ELISA kit to detect BAFF on human serum. The kit has a standard curve that goes from 0.31ng/ml to 20ng/ml. In the literature, I found no article that used the exact same kit, but...

07 January 2015 3,987 3 View

Does anybody uses BAFF and APRIL eBiscience ELISA kits?

I have only a minimum experience on ELISA tests and I am trying to use eBioscience kits for BAFF (BMS2007INST) and APRIL (BMS2008) and I'm not having good results. I was wondering if someone who...

03 January 2015 5,671 4 View

Can we classify HV and LV lines based on line length?

I have dataset which shows the length of power lines. I need to classify the lines based on the line length. Is there a rule to classify the High voltage (HV) and low voltage (LV) lines based on...

03 March 2021 4,116 4 View

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02 March 2021 3,060 3 View

Issues with Permeabilization during Flow Cytometry?

Hello Everyone. Currently I am working to characterize macrophages in the myocardium after ischemia-reperfusion injury in rats. Due to the low total cell number isolated from rat hearts I can...

01 March 2021 3,867 3 View

Which cell line should we use to perform biological dosimetry experiments?

We are preparing some experiments based on irradiating cells under different conditions in order to evaluate the effects in terms of DNA damage, genetic expression, etc. As our project is...

01 March 2021 3,355 3 View

Is it possible for two human neuronal cell lines to have different gene sequence for the same protein?

I am looking at the ATP1A2 (Sodium/Potassium ATPase alpha subunit 2) in two human neuronal cell lines. Expression levels of this protein seems to be almost equal when detected by one antibody....

01 March 2021 3,607 3 View

Is CD44 degraded in lysosome together with hyaluronan after CD44 mediated endocytosis of hyaluronic acid?

Also when RHAMM binds hyaluronic acid, they get internalized, will RHAMM also be degraded? Or both CD44 and RHAMM will be transferred back to the cell membrane? Asking for breast cancer cell line...

01 March 2021 8,169 2 View

Do you need the CMV enhancer before the CMV promotor for a proper function of CMV on the gene that follows?

I'm a student and I have to produce a cell line with a knockin for the NRF2 gene with GFP. I have to put a promotor in front of the GFP because the gene will be too far away from the promotor of...

28 February 2021 7,127 2 View

What could be some reasons why unstimulated monocytes are getting activated?

Im doing PBMC isolation -> CD14+ enrichment using magnetic beads -> stimulation setup. My negative control is just cells in cRPMI but they seem to get activated over and over again.

28 February 2021 7,883 3 View

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28 February 2021 9,936 2 View

Has anyone had luck using cell lines other than HEK 293 (such as COS1) to package lentivirus?

I am looking to package lentivirus in endothelial cells but I am opposed to using 293 cells due to personal ethics regarding the source. I have done some reading and saw that COS1, COS7, & CHO...

25 February 2021 3,030 1 View