File:Montgomery Cytological studies 1898.jpg

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English: Egg development of Lineus gesserensis

Fig. 160. Ovum

Figs. 161 and 162. Germinal vesicles (as in 159).

Fig. 163. Group of neighboring nuclei from a gonad, showing mitotic stages (aq. sol. sublimate ; Del. haematoxyUn, 20 min. ; eosin, 5 min.).

Figs. 164-172. Nuclei from gonads (as in 163).

Figs. 173-176. Germinal vesicles (as in 163).

Fig. 177. The largest ovum found, only a part of the cytoplasm drawn (as in 163).
Date
Source (1898). "Comparative cytological studies, with especial regard to the morphology of the nucleolus". Journal of Morphology 15 (2): 265–582. DOI:10.1002/jmor.1050150204.
Author Thomas Harrison Montgomery, Jr.

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