The Centers for Disease Control and Prevention (CDC) is a federal agency that conducts and supports health promotion, prevention and preparedness activities in the United States with the goal of improving overall public health.
4. Dimorphic fungi may exhibit two different growth forms. Outside the body they grow as a mold, producing hyphae and asexual reproductive spores, but in the body they grow in a yeast-like form. 5. The appearance of a mold and the type of spores it produces is useful in its identification.. Dimorphic fungi. Dimorphic fungi may exhibit two different growth forms. Outside the body they grow as a mold, producing hyphae and asexual reproductive spores, but in the body they grow in a non-mycelial yeast form.
Very few fungi exhibit dimorphism. Most fungi occur in the hyphae form as branching, threadlike tubular filaments. These filamentous structures either lack cross walls (coenocytic) or have cross walls (septate) depending on the species. In some cases septate hyphae develop clamp connections at the septa which connect the hyphal elements.