| The
participants included (A) a 31-y-old woman with a CD4 count of
83 cells/µl by flow cytometry; (B) a 33-y-old woman with a CD4
count of 271 cells/µl by flow cytometry; and (C) a 5-mo-old infant
with an absolute CD4 count of 2,098 cells/µl and a CD4:CD8 ratio
of 1.80 by flow cytometry. In these images, CD3+CD8+
T cells appear red, monocytes appear green, and CD3+CD4+
T cells appear yellow. Each image reflects 0.18 µl of whole blood.
From: Rodriguez
WR, Christodoulides N, Floriano PN, Graham S, Mohanty
S, et al. (2005) A Microchip CD4 Counting Method for HIV Monitoring
in Resource-Poor Settings. PLoS Med 2(7): e182
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