Distribution of a formalin-resistant myelomonocytic antigen (L1) in human tissues. II. Normal and aberrant occurrence in various epithelia.

L1 is an approximately 36-kd protein present in virtually all resting peripheral blood neutrophils and monocytes. It is particularly well preserved in formalin-fixed and paraffin-embedded routine material. In a recent immunohistochemical study, the authors showed that L1 has a restricted distribution within the monocyte-derived cell lineage, being mainly… CONTINUE READING