Elementary anatomy and physiology : for colleges, academies, and other schools elementaryanato00hitc Year: 1869 20 HITCHCOCK'S ANATOMY Fig. 10. tissues in animals and vegetables are made up. This is called cytogenesis. The increase usually takes place by duplicative subdivision, which is shown on Fig. 10. The cell a a first becomes elongated, as at 6, and then it divides at c c. The subdivision going on will give an increase in lapid ratio—2, 4, 8, 16, 32, etc. Fig. 11 shows an example of this division, A, B, C, D, in its earlier stages, and E, F, G, H, in its more advanced condition. Someti
Elementary anatomy and physiology : for colleges, academies, and other schools elementaryanato00hitc Year: 1869 20 HITCHCOCK'S ANATOMY Fig. 10. tissues in animals and vegetables are made up. This is called cytogenesis. The increase usually takes place by duplicative subdivision, which is shown on Fig. 10. The cell a a first becomes elongated, as at 6, and then it divides at c c. The subdivision going on will give an increase in lapid ratio—2, 4, 8, 16, 32, etc. Fig. 11 shows an example of this division, A, B, C, D, in its earlier stages, and E, F, G, H, in its more advanced condition. Sometimes cells multiply by the development of new cells in the interior In this case the nucleus subdivides into two or more portions, which at length fill the original cell, as is shown in Fig. 12. Some- times cells are formed by the expansion of homogeneous
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