The process by which a disease develops and progresses in a host.

Referring to organisms or substances that cause disease.

The study of diseases, their causes, effects, and the changes they cause in tissues and organs.

A series of actions or steps in a biological process, such as a metabolic pathway or signal transduction pathway.

Phosphate-buffered saline, a buffer solution commonly used in biological research and laboratory applications.

An abbreviation for ‘personal computer,’ or it can also refer to phosphatidylcholine, a type of phospholipid.

A type of enzyme complex that is involved in the regulation of metabolic processes.

Polymerase chain reaction, a technique used to amplify DNA segments for analysis.

Relating to or characterized by papules, which are small, raised bumps on the skin.

A small, solid, raised bump or lesion on the skin, typically less than 1 cm in diameter.