1 Systematics : The study of the identification, taxonomy and nomenclature of organisms, including the classification of living things with regard to their natural relationships and the study of variation and the evolution of taxa.he Swedish botanist Carolus Linnaeus is regarded as the father of taxonomy, as he developed a system known as Linnaean classification for categorization of organisms and binomial nomenclature for naming organisms.
Pulmonary thromboendarterectomy. In thoracic surgery, a pulmonary thromboendarterectomy (PTE) is an operation that removes organized clotted blood (thrombus) from the pulmonary arteries. Contents. 1 Indication. 2 Description of the surgery.
Personal protective equipment, or PPE, is designed to provide protection from serious injuries or illnesses resulting from contact with chemical, radiological, physical, electrical, mechanical, or other hazards.