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. 2024 Apr 22;132(4):042001. doi: 10.1289/EHP14722

Branching filaments stand in stark relief against a pale mottled background.

Strains of Aspergillus fumigatus are developing resistance to triazole antifungal agents.41 This microscopic section showing the microbe’s branching hyphae—a form of vegetative growth—is from an immunosuppressed individual. Image: © Ralph C. Eagle, Jr./Science Source.