Archive image from page 90 of Cytology, with special reference to. Cytology, with special reference to the metazoan nucleus cytologywithspec00agar_0 Year: 1920 Ill SYNGAMY 75 centrosome soon becomes visible in the middle piece, and an astral radiation appears round it. It next divides into two (if it has not already done so in the spermatid), a spindle figure being spun out between the two daughter centrosomes, and thus a complete achromatic figure is

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