1. printing. abbreviation 1. printing ptg. printing
PTGS post-transcriptional gene silencing
1. parathyroid hormone. PTH abbr. parathyroid hormone PTH parathyroid hormone
PTHC percutaneous transhepatic cholangiography
Pthirus Pthir·us (thĭr’əs, thī’rəs) n. A genus of parasitic lice of the family Pediculidae, formerly grouped in the genus Pediculus, the main species of which is the crab louse.