Recognition of a CD4+ mouse medullary thymocyte subpopulation by <em>Amaranthus leucocarpus</em> lectin.

We have used the Galβ(l→3)GalNAc-specific Amaranthus leucocarpus lectin to isolate a thymus cell subpopulation which is different from that sorted with Arachis hypogaea lectin. The cells recognized by A. leucocarpus lectin were predominantly CD4+, whereas a minor proportion of CD8+ cells (approximately 11%) were also identified. The A. leucocarpus-positive cells were located in the thymus medulla and the cortico-medullary junction. The cortex was negative for A. leucocarpus cells. [ABSTRACT FROM AUTHOR]