Interpubic Ligament: Elasticity in Pregnant Free-tailed Bat

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Science  04 Apr 1969:
Vol. 164, Issue 3875, pp. 81-82
DOI: 10.1126/science.164.3875.81


The disparity between the size of the bony pelvis of a pregncant free-tailed bat and the single full-term fetus is so great that in order for birth to occur the interpublic ligament has to stretch to more than 15 times its original length. It is a living elastic band that contains an abundance of elastic fibers.

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