File:Boyden1932 plate05.jpg

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Plate 5

Chick embryos incubated from two to four days after the Wolffian ducts had been interruptcd experimentally. X ,5.

19 and 20 Enibryo no. 190 (six days). Both Wolffinn duets stopped ter~iiincllly :it level of tncnty-ninth somite. Note abortive allantois and leg bud clcft by operation (co~nparefig. 5).

21 Enibryo 110. 215 (five days thirteen 11ours). Both Wolfiaii ducts stoppcci terinin:rlly, at level of iiiiieteeiith soniitc. Note TI ing buds cleft by opcratioii (compare figs. 3 and 16).

23 Enibryo no. 231 (four days fourteen lioiirs). Both Wolffian ducts stopped trriiiin:illy at level of tneiity-fifth somite. Lesion sevcred spinal cord. Secl notch in back at level of leg bud. Note rudimentary allantois (eompare figs. 4 and 17).

23 Enibryo no. 171 (sir days one hour). Right Wolffian duct stopped terniinally a t Ieicl of thirticth somite. S o t e leg bud cleft by operation (compare fig. 18).


Boyden EA. Congenital absence of the kidney - an interpretation based on a 10-mm human embryo exhibiting unilateral renal agenesis. (1932) Anat. Rec. 52(4):325-349.

Cite this page: Hill, M.A. (2024, February 28) Embryology Boyden1932 plate05.jpg. Retrieved from

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© Dr Mark Hill 2024, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G

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