S: We did a study of normal males and females on skills such as the ability to tell whether someone is looking directly at you and interpreting facial expressions. (discovermagazine.com)
How much testosterone you produce naturally is subject to genetic constraints with normal male testosterone levels varying significantly over a wide range. (predatornutrition.com)
Female mice and male mice that had been treated with estrogen were able to clear the bacteria from their lungs more rapidly than normal male mice. (sciencedaily.com)