MITOCHONDRIA IN TISSUE CULTURES 



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V 



Fig. 17 Cells from a 2-day culture of heart from a 5-day chick embryo; X 54^) 

 diam. ; a, very young daughter cells with 42 mitochondria in each cell; b, slightly 

 older daughter cells with 42 and 35 mitochondria; c, older daughter cells with 48 

 and 75 mitochondria; d, older daughter cells with 43 and 38 mitochondria; e, 

 older cells with 66 mitochondria; /, older cell with 96; g, still older cell with 156; 

 h, prophase with 197 (?); i, metaphase with 117; j, anaphase with 174; k, old 

 resting cell with only 32 mitochondria. 



