. The American journal of anatomy. etween figs. 26 and 27). 25 Early contact stage in anastomosis; from an embryo mm. long (); alum hematoxylin. X 400. 26 Fusion of tubules; from an embryo 19 mm. long ( 3); alum 400. 27 Pstablishmcnt of connecting lumen between two anastomosed an embryo 19 mm. long ( 2); alum hematoxylin. X 400. Graphicreconstructions of these tubules, shown in cross section in figures 26 and 27, areillustrated in figure 2, page 224. 28 to 30 Sections of the external walls of lateral hepatic pouches of Acanthiasembryos illustrating
. The American journal of anatomy. etween figs. 26 and 27). 25 Early contact stage in anastomosis; from an embryo mm. long (); alum hematoxylin. X 400. 26 Fusion of tubules; from an embryo 19 mm. long ( 3); alum 400. 27 Pstablishmcnt of connecting lumen between two anastomosed an embryo 19 mm. long ( 2); alum hematoxylin. X 400. Graphicreconstructions of these tubules, shown in cross section in figures 26 and 27, areillustrated in figure 2, page 224. 28 to 30 Sections of the external walls of lateral hepatic pouches of Acanthiasembryos illustrating the formation of the hepatic tubules. 28 Formation of tubule ridges; from an embryo 8 mm. long (); iron hematoxylin. X 600. 29 Early outpouching of individual tubules. From an embryo 10 ( 20); alum hematoxylin. X 400. 30 Completely formed tubules at the time when anastomoses first appear;from an embrjo mm. long ( 18); alum hematoxylin. X 400. 304 PirSTOGENESIS OF THE LIVER RICHARD E. SCAMMON PLATE 2. PLATE 3 EXPLANATION OF FIGURES 31 to 34 Four sections of livers of Aeanthias embryos of different ages, illus-trating the changes in the hepatic cylinders; all X 400. 31 Section of the liver of an embryo 16 mm. long ( 547); ironhematoxylin. 32 Section of the liver of an embryo mm. long ( 1494); ironhematoxylin. 33 Section of the liver of an embryo 32 mm. long ( 1652); ironhematoxylin. 34 Section of the liver of an embryo (of Squalus sucklii) 95 mm. long (); alum cochineal. 306 HISTOGENESIS OF THE LIVER RICHARD E. SCAMMON PLATE 3 goe ^/^^^ sT
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