Employee exposure to bloodborne pathogens from blood and Other Potentially Infectious Materials (OPIM) because employees are not using Universal Precautions. 1  Bloodborne pathogens are pathogenic microorganisms that are present in human blood and can cause disease in humans.
atonality. n. 1. (Music, other) absence of or disregard for an established musical key in a composition. 2. (Music, other) the principles of composition embodying this and providing a radical alternative to the diatonic system.
Central nervous system (CNS) atypical teratoid/rhabdoid tumor (AT/RT) is a rare, clinically aggressive tumor that most often affects children aged 3 years and younger but can occur in older children and adults. About one-half of AT/RTs arise in the posterior fossa.