Inhibition of colony formation of AIDS-KS cells by IL-4(38-37)-PE38KDEL.
KS248 cells (500) were plated in 100-mm petri dishes and exposed with the indicated concentration of IL-4(38-37)-PE38KDEL as performed for Table 3. The control cells formed 218 ± 8 (mean ± S.D.) colonies with the cloning efficiency of 43.6%. Similar results were obtained for NCB-59 cells (not shown). For illustration purposes, one out of three plates is chosen for each concentration.