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Updated: Jun 23, 2026
Intranasal Immunization and Milk Collection in Studies of Maternal Immunization in New Zealand White Rabbits (Oryctolagus cuniculus)
Published on: July 31, 2021
Conceptus numbers do not affect blood concentrations of relaxin in the rabbit
Phillip Fields1, Michael Fields
1Department of Cell Biology and Neuroscience, University of South Alabama College of Medicine, Mobile, Alabama 36688, USA. pfields@usouthal.edu
Abstract:
On day 18 of pregnancy, conceptuses were surgically removed in order that rabbits would be left with seven, five, three, or one conceptus. During pregnancy, blood concentrations of relaxin were determined by radioimmunoassay. There was no difference between relaxin concentrations in rabbits carrying one versus seven conceptuses. The results indicate that conceptus number does not influence the blood concentration of relaxin in the rabbit.
