ISSN:
0362-2525
Keywords:
Life and Medical Sciences
;
Cell & Developmental Biology
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Biology
,
Medicine
Notes:
The pattern of transport and distribution of rabbit embryos in the oviduct and uterus was studied 15 to 168 hours post coitum (p. c.). The reproductive tract was frozen in liquid nitrogen, thawed, and cleared in benzyl-benzoate solution using Orsini's technique. The location of the eggs and the ampullary-isthmic junction were identified using transmitted light from a dissecting microscope. Accumulation of the eggs in the oviduct occured in two phases. In the first phase the eggs were retained above the ampullaryisthmic junction, 3-12 hours after ovulation. In the second phase, the eggs were retained 36-60 hours after ovulation, above the uterotubal junction (at a distance approximately 12 % of the oviductal length). The rate of transport of individual eggs in the oviduct, and the time of the entry of eggs into the uterus were variable. Au 78 hours p. c. most blastocysts occupied the proximal half of the uterine horn, although some appeared very close to the internal os of the cervix. Spacing of blastocysts in the uterus, 114 to 120 hours p. c., involved movement of blastocysts away from the cervix. Unfertilized eggs remained in the uterus, along with developing blastocysts 168 hours p. c. Few eggs were retained in the oviduct at 108 and 115 hours p. c.
Additional Material:
7 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/jmor.1051440306
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