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Development of C. japonica male strobili and pollen. (a–e) Longitudinal section of male strobili at Stages 1–5; (f–j) male strobilus at Stages 1–5; (k–o) male strobilus at Stages 6–10; (p–v) male strobilus at Stages 6–10; sections were stained with eosin and hematoxylin. Ar, archesporial cell; BP, bicellular pollen; FB, fibrous band; MC, meiotic cell; ML, middle layer; Msp, microspore; PMC, pollen mother cell; Ta, tapetum; Td, tetrad.
