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. Author manuscript; available in PMC: 2009 May 1.
Published in final edited form as: Horm Behav. 2008 Jan 10;53(5):673–692. doi: 10.1016/j.yhbeh.2007.12.013

Figure 4. Androgen treatment in adulthood blocks the EB-induced LH surge.

Figure 4

Adult female rats were implanted with either empty Silastic capsules or capsules filled with either crystalline T, or DHT. Three days later on diestrus, at 0900h, the female rats were ovariectomized (OVX) and treated with estradiol benzoate (EB; 30 μg sc). At the same time, the rats were fitted with jugular catheters. The following day, blood samples were collected every 30 minutes from 1200h to 2100h to assess the release of the LH.. Statistically significant LH surges were detected in control females but not in T- or DHT-treated females (n=4 per group). The data are represented as mean ± SEM. (From Foecking and Levine, 2005).