Text book of the Embryology of Invertebrates volume 4
Text book of the Embryology of Invertebrates volume 4
E Eugen Korschelt
The book Text book of the Embryology of Invertebrates volume 4 was written by author E Eugen Korschelt Here you can read free online of Text book of the Embryology of Invertebrates volume 4 book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Text book of the Embryology of Invertebrates volume 4 a good or bad book?
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In our attempts to interpret the structure and sig- nificance of the proliferating stolon, we naturally seek for agreement between the development of its buds and that of the first four Ascidiozooids. When we consider that the proliferating stolon must evidently be traced back to the 488 TUNICATA. remains of the duct connecting each zooid with its neighbours (Fig. 196, s, p. 402 ; Fig. 253 ; v), and when we remember that in the four primary Ascidio- zooids continuations of the peribranchial tub...es also are originally contained in these ducts, we shall be led to ask whether, after the abstriction of those parts of the peribranchial tubes that belong to the separate Ascidiozooids from the ducts, remains of the tubes may not be retained in the form of incon- spicuous cell-groups which might easily be mistaken for mesoderm, and from which the peribranchial tubes of the stolon that develops later are derived. The rudiment of all the peribranchial tubes whichjiform later could in this way be traced back to the peribranchial tubes in the Cyathozooid.
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