1 Some virulent bacteria produce special proteins that allow them to colonize parts of the host body. 2  Helicobacter pylori is able to survive in the acidic environment of the human stomach by producing the enzyme urease.
rfid-Computer Definition. (R adio F requency ID entification) A data collection technology that uses electronic tags for storing data. The tag, also known as an electronic label, transponder or code plate, is made up of an RFID chip attached to an antenna.
Rheumatoid factor (RF) Rheumatoid factor (RF) is a blood test that measures the amount of the RF antibody in the blood. Most of the time, blood is drawn from a vein located on the inside of the elbow or the back of the hand. In infants or young children, a sharp tool called a lancet may be used to puncture the skin.