File:Foster036.jpg: Revision history

From Embryology

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11 January 2011

  • curprev 09:0009:00, 11 January 2011S8600021 talk contribs 854 bytes +854 FIG. 36. DIAGRAM OF THE CIRCULATION OF THE YOLK-SACK AT THE END OF THE THIRD DAY OF INCUBATION. H. heart. A A. the second, third and fourth aortic arches ; the first has become obliterated in its median portion, but is continued at its proximal end as t