Improved detection of HLA-CWS and CW7 by two colour fluorescence technique

Abstract
Reactivity of 2 Cw5 and 3 Cw7 antisera was compared in the standard NIH [National Institutes of Health] and the 2 color fluorescence (TCF) techniques. Contrary to the NIH, the TCF method yielded strong positive reactions which enabled clear assignment of the Cw5 and Cw7 specificities. The TCF technique combines 3 factors that increase the sensitivity of serum reactions: typing on B lymphocytes; prolonged incubation; and staining of the lysed cells with ethidium bromide.