Abstract
Human natural killer (NK) and killer (K) cells were directly enumerated using a monoclonal antibody (HNK-1) and an immunofluorescence assay. The frequency of cells bearing surface HNK-1 antigen was very low in the newborn (<1.0%) and increased progressively through childhood and into adult life. This was correlated with an age-related increase in functional NK and K cell activities. Males had a slightly higher proportion of HNK-1+ cells than females. In addition to HNK-1 expression on the surface membrane, a prominent cytoplasmic expression of HNK-1 antigen was found in some but not all surface HNK-1+ cells. The cytoplasmic accumulation of HNK-1 molecules appeared to occur in more mature cells of this lineage.
Original language | English (US) |
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Pages (from-to) | 321-326 |
Number of pages | 6 |
Journal | Journal of Experimental Medicine |
Volume | 155 |
Issue number | 1 |
DOIs | |
State | Published - 1982 |
Externally published | Yes |
ASJC Scopus subject areas
- Immunology and Allergy
- Immunology