THP-1 cell BTO:0001370 BrendaTissueOBO Human acute monocytic leukemia established from the peripheral blood of a 1-year-old boy with acute monocytic leukemia (AML) at relapse in 1978; the cells can be used for induction of differentiation studies; the cells were described to produce lysozyme and to be phagocytic. THP1 cell monocytic leukemia cell line