the J stands for Jumper as in Air Force Pararescue Jumper. The term Pararescue Jumper is a retronym of the initials 'PJ' that were used on an Air Force Form 5 (Aircrew Flight Log) to identify anyone who is onboard in order to jump from the aircraft..Source(s): http://en.wikipedia.org/wiki/United_Stat...he J stands for Jumper as in Air Force Pararescue Jumper. The term Pararescue Jumper is a retronym of the initials 'PJ' that were used on an Air Force Form 5 (Aircrew Flight Log) to identify anyone who is onboard in order to jump from the aircraft..
Virologists are microbiologists who study microorganisms that quickly duplicate, resulting in the rapid spreading of viruses. Their primary work is to figure out how diseases like AIDS, SARS and hepatitis spread, in order to prevent more rampant development and to assist in vaccine development.
A nephrologist is a medical doctor who specializes in kidney care and treating diseases of the kidneys. The term nephrologist comes from the Greek word ânephrosâ, which means kidney or renal and âologistâ refers to someone who studies.hen a kidney doctor first meets with a patient, he or she will usually go over the patientâs medical history and do a complete physical. A nephrologist will then do blood and urine tests to determine how well the patientâs kidneys are functioning.