The vast majority of glucocorticoid activity in most mammals is from cortisol, also known as hydrocortisone. Corticosterone, the major glucocorticoid in rodents, is another glucocorticoid.
Men who test negative for a known breast cancer gene abnormality have the same very low risk of developing breast cancer as men in the general population. Whether you are a woman or a man, testing negative also means that you could not have passed the genetic abnormality on to your children.
However, a negative p24 test can mean three things: 1  the person is HIV-negative. 2  the person is HIV-positive but that the test could not detect the p24 protein because the person was infected more than four to six weeks earlier. 3  the levels of p24 antigen are too low to be detectable with current technologies.