In vitro survival of howler monkey (Alouatta caraya) and other simian lymphocytes.

Lymphoid cell cultures from normal howler monkey (Alouatta caraya) lymph nodes or peripheral blood were found to survive for over four months. Several-fold increase in cell numbers occurred during the first two months of culture. The cells were predominantly of T-cell origin. Herpes or C-type virus or viral genomes were not detected in these lymphoid type cultures.