Substantial body charge digital imaging is employed for the first time to characterise the flagellar motion of migrating sperm in very low and significant viscosities, and demonstrates in precise spatial and temporal depth waveform evolution alongside theFlagellum.SpermQ – H? Tr? M?nh Tinh, T?ng Kh? N?ng Th? Thai T? Nhiên Cho Nam là s?n ph?m c?