PCA

PCA may refer to:

==Medicine and biology== Patient-controlled analgesia Plate count agar in microbiology Polymerase cycling assembly, for large DNA oligonucleotides Posterior cerebral artery Posterior cortical atrophy, a form of dementia Prostate cancer Protein-fragment complementation assay, to identify protein–protein interactions Protocatechuic acid, a phenolic acid Personal Care Assistant, also known as unlicensed assistive personnel Procainamide