As we are finding difficult to secure the Trypan Blue supplies in Colombia, i would like to know if there is any alternative reagent to Stain the PBMC cells.
I've used Turk's (or Tuerk) solution to count PBMC. In this case, the PBMC will be stained in blue and not the non-viable cells. The recipe is 3 ml glacial acetic acid, 1ml of 1% gentian violet and complete to 100 ml with distilled water.