Figure 1.

Exposure to EBV results in differential levels of expression of CD23 on B cells. Expression of CD23 was determined using PE-anti-CD23 antibody at 0 h, 18 h, 42 h, 66 h, and 90 h after exposure of B cells to EBV. Percent CD23⁺ cells expressing low levels or high levels of CD23 (CD23^hi) are shown.