Ultrastructural identification of human tonsil T-lymphocytes by peroxidase-conjugated anti-HTLA serum.

A horse anti-serum rendered specific for human T-lymphocytes was conjugated with peroxidase and used for ultrastructural identification of human tonsil T-lymphocytes. With T- and B-enriched suspensions, virtually all T-lymphocytes were labelled with Po-anti-HTLA, whereas no B-cells were stained with this conjugate. The labelling HTLA conjugate confirm the ultrastructural characteristics of thymus-dependant cells.