Histoplasma

Part of speech: noun

Definitions

1. A type of fungus that thrives in environments rich in bird or bat droppings and can cause respiratory infections in humans
2. An organism belonging to a genus of dimorphic fungi, often linked to histoplasmosis, primarily affecting the lungs upon inhalation
3. A pathogenic fungus found in soil, typically in urban areas, which can lead to health issues when spores are inhaled

Etymology: Histoplasma is a modern scientific coinage, not an ancient one. It was named in 1905 by the American pathologist Samuel Darling, who first described the fungus after examining tissue from patients in Panama. He built the name from two Greek roots: "histos," meaning tissue or web, and "plasma," meaning something formed or moulded. The fungus was found living inside host tissue, which is why the name points to tissue rather than soil or air. The organism is now known to grow in soil enriched with bird or bat droppings, and people usually become infected by breathing in spores stirred up from that ground. Most infections cause no symptoms or mild flu-like illness, but in some cases the fungus spreads through the body, a condition called histoplasmosis. The name Darling chose stuck, and the genus is now placed among the fungi with its own family of related species.