Oxytocin
Oxytocin (Oxt) is a peptide hormone and neuropeptide. Oxytocin is normally produced by the paraventricular nucleus of the hypothalamus and released by the posterior pituitary. It plays a role in social bonding, sexual reproduction, childbirth, and the period after childbirth. Oxytocin is released into the bloodstream as a hormone in response to stretching of the cervix and uterus during labor and with stimulation of the nipples from breastfeeding. This helps with birth, bonding with the baby, and milk production. Oxytocin was discovered by Henry Dale in 1906. Its molecular structure was determined in 1952. Oxytocin is also used as a medication to facilitate childbirth.
Oxytetracycline
Oxytetracycline is also used to treat acne, due to its activity against the bacteria on the skin that cause acne ("Propionibacterium acnes"). It is used to treat flare-ups of chronic bronchitis, due to its activity against the bacteria usually responsible, "Haemophilus influenzae". Oxytetracycline may also be used to treat other rarer infections, such as those caused by a group of micro-organisms called rickettsiae ("e.g.", Q fever). To make sure the bacteria causing an infection are susceptible to it, a tissue sample is usually taken, for example a swab from the infected area, or a urine or blood sample.