Archive image from page 50 of The development of the chick. The development of the chick : an introduction to embryology . developmentofchi02lill Year: 1936 DEVELOPMENT PRIOR TO LAYING 33 rating wall (Fig. 9). The chromosomes and nucleoli form a rriir noar the center of the upper plane surface of the germinal group ne ''0 M> '•- - _'' >'


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