. The chordates. Chordata. EPIDERMIS :. SMOOTH COPJUM "-Si** HUMAN EMBRYO. B MUSCLE. FlG. 447. A figure illustrating the development of the mammary gland in man. A mm. embryo (left) shows the "milk-line," a ridge which extends from the axillary region to the groin. The definitive gland develops only from the anterior portion of this line. (Redrawn from \rey, after Kollmann.) (A, B, C) Sections of the definitive mammary gland in successive stages of development. (A) From a two-month embryo. (B) From a four-month embryo. (C) From a seven-month embryo.


. The chordates. Chordata. EPIDERMIS :. SMOOTH COPJUM "-Si** HUMAN EMBRYO. B MUSCLE. FlG. 447. A figure illustrating the development of the mammary gland in man. A mm. embryo (left) shows the "milk-line," a ridge which extends from the axillary region to the groin. The definitive gland develops only from the anterior portion of this line. (Redrawn from \rey, after Kollmann.) (A, B, C) Sections of the definitive mammary gland in successive stages of development. (A) From a two-month embryo. (B) From a four-month embryo. (C) From a seven-month embryo. The mammary gland is a compound tubular gland. (Redrawn from Arey, after Tourneux.) (Courtesy, Neal and Rand: "Chor- date Anatomy," Philadelphia. The Blakiston Company.). 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 Rand, Herbert W. (Herbert Wilbur), 1872-1960. Philadelphia : Blakiston


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