Here is a laboratory instrument called a Coulter Counter that enumerates the white blood cells

02.This lung is as solid as liver because of Pneumocystis carinii pneumonia (PCP). There is diffuse consolidation. PCP is typical of immunocompromised patients, particularly those with AIDS.

02.图示卡氏囊虫性肺炎患者的肺，质硬如肝，见于免疫抑制患者，特别是艾滋病患者。