. Biology of the vertebrates : a comparative study of man and his animal allies. Vertebrates; Vertebrates -- Anatomy; Anatomy, Comparative. Ectoderm Embryonic Endoderm B Fig. 131. Establishment of endoderm and ectoderm in mammalian development. In a embryonic and extra-embryonic portions of the endoderm have arisen from the inner cell mass. In b the ectoderm has broken through the trophoblast and begun to spread out in a layer joined peripherally to the trophoblast. (After Parker and Haswell.). Please note that these images are extracted from scanned page images that may have been digitally en


. Biology of the vertebrates : a comparative study of man and his animal allies. Vertebrates; Vertebrates -- Anatomy; Anatomy, Comparative. Ectoderm Embryonic Endoderm B Fig. 131. Establishment of endoderm and ectoderm in mammalian development. In a embryonic and extra-embryonic portions of the endoderm have arisen from the inner cell mass. In b the ectoderm has broken through the trophoblast and begun to spread out in a layer joined peripherally to the trophoblast. (After Parker and Haswell.). Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Walter, Herbert Eugene, b. 1867; Sayles, Leonard Perkins, 1902-. New York : Macmillan Co.


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Keywords: ., bookcentury1900, booksubjectanatomycomparative, booksubjectverte