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The development of isolated blastomeres of the frog's egg

✍ Scribed by McClendon, J. F.

Publisher: Wiley (John Wiley & Sons)
Year: 1910
Tongue: English
Weight: 375 KB
Volume: 10
Category: Article
ISSN: 0002-9106
DOI: 10.1002/aja.1000100112

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✦ Synopsis

WITH TWO FIGURES

After the numerous proofs furnished by various investigators, there is no question that differentiation begins very early in development, but the determination of the exact stage a t which various differentiations begin, has been hampered by technical difficulties. The importance of overcoming these difficulties lies in the fact that it is only by an exact study of the early development that we can ever hope to know the mechanics of differentiation. The later stages are so complex that it is doubtful that they could be analysed even though the early stages were understood.

The frog's egg, owing to its large size, has been a favorable object of study. 0. Hertwig,l after pricking one blastomere, found that a complete embryo was formed.

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