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PetriKey

Fungus

Histoplasma capsulatum

Dimorphic fungus with macrophage clue

his-toh-PLAZ-muh kap-soo-LAH-tum

fungusdimorphicintracellularmacrophagesoil

High-yield clue

Dimorphic fungus + intracellular macrophage yeast vocabulary.

Overview

A dimorphic fungus used to teach intracellular yeast in macrophages, geographic exposure vocabulary, and granuloma concepts.

Classification

  • Fungus
  • Dimorphic fungus
  • Intracellular yeast concept

Lab & identification clues

  • Macrophage-associated yeast vocabulary
  • Antigen test concept
  • Dimorphism concept

Associations

  • Ohio/Mississippi River Valley vocabulary
  • Bird/bat-dropping exposure framing
  • Granulomatous disease vocabulary

Commonly confused with

  • Blastomyces dermatitidis
  • Cryptococcus neoformans

Frequently asked questions

What is Histoplasma capsulatum?

A dimorphic fungus used to teach intracellular yeast in macrophages, geographic exposure vocabulary, and granuloma concepts.

What are the lab clues for Histoplasma capsulatum?

Lab clues for Histoplasma capsulatum include Macrophage-associated yeast vocabulary, Antigen test concept, and Dimorphism concept.

What is Histoplasma capsulatum commonly confused with?

Histoplasma capsulatum is commonly confused with Blastomyces dermatitidis and Cryptococcus neoformans.

Original student-study summary. Sources checked: OpenStax Microbiology 2e, NCBI Bookshelf Medical Microbiology, and CDC topic pages where applicable; reviewed 2026-06. Educational only; no diagnosis, treatment, dosing, or specimen-handling guidance.

OpenStax: Microbiology 2e organism classification foundations - sourceNCBI Bookshelf: Medical Microbiology organism chapters - sourceCDC: CDC disease and public-health topic pages - source