we did a ficoll gradient with rat blood, to isolate endothelial progenitor cells... it was the first try, i didnt do it before. Now we have one colony of cells, that are proliferating very good, but in the background there are big round cells, and i cant figure out what that might be... also the colony doesnt look like endothelial cells i have seen so far, but the morphology can be diferrent due to the circumstances, right? maybe someone of you could take a look at this picture and help me with an idea? i didnt do any further tests so far... am i right, that it cant be fibroblasts? because they arent present in the blood, right?
i would reeeeaallly like your help! thx everybody!!
ps the picture is from day seven of culture...














