[The cytochemical behavior of PAH-stimulated lymphocytes].

A comparison was made between the cytochemical behaviour of PAH stimulated lymphocytes and that of non-stimulated lymphocytes otherwise treated in the same way. Apart from non essential differences and the clear increase in size of the stimulated cells, there was no significant difference in the behaviour of stimulated and non-stimulated lymphocytes during the various reactions (non-specific esterases, acid phosphatase, alkaline phosphatases, naphtol ASD sodiumacetate-esterases, peroxydases leucine aminopeptidases, DOPA-reaction). There was no sign of lymphocytes being transformed into monocytes of fibroblasts.