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自然沉降时血浆高倍镜下（瑞氏染色，100×）观察到血小板和白细胞（左），低速离心时血浆高倍镜下（瑞氏染色，100×）观察到血小板富集而无白细胞（右）。
Platelets and leukocytes were observed in plasma which was obtained by natural sedimentation (left, Wright's stain, 100×); enriched-platelets without leukocytes were observed in plasma which was obtained by low-speed centrifugation (right, Wright's stain, 100×).
