Electron micrographs of the family of retroviruses that reproduce in t-lymphocytes. Retroviruses, which cause a variety of naturally occurring cancers in many animal species, also cause cancers in human beings. The first two human retroviruses to be discovered and characterized, human t-cell leukemia virus type I (HTLV-I) and type II (HTLV-II), have been associated with the human cancers known, respectively, as adult t-cell leukemia and hairy cell leukemia. HTLV-III is the AIDS virus, now called HIV-I. Epidemiologic studies have shown that HTLV-I infection and t-cell malignancy both cluster in certain geographic areas and in certain populations, and suggest that transmission occurs in the household, through sexual contacts, and perhaps at birth.

Depiction of an enlarged liver. It has been shown in context of a liver of normal size.

Antibody COVID-19 test (past infection)

Lab technician Monique Baker, 59th Laboratory Squadron, filters blood products from the day's donations made by basic trainees Nov. 25 at the Lackland Blood Donor Center. The center was recently inspected by the ABBA. Blood donations are always needed, especially during the holidays when demand goes up and there is a period when no new training flights arrive.