Homo sapien. Also known as Lucy
Dimorphic fungi are those species that occur as either molds or yeast, depending on environmental conditions such as temperature and nutrient availability.
Dimorphic fungi are fungi that can exist in the form of both mold and yeast. This is usually brought about by change in temperature and the fungi are also described as thermally dimorphic fungi. An example is Talaromyces marneffei, a human pathogen that grows as a mold at room temperature, and as a yeast at human body temperature.
The term dimorphic is commonly used for fungi that can grow both as yeast and filamentous cells, however many of these dimorphic fungi actually can grow in more than these two forms. Dimorphic is thus often used as a general reference for fungi being able to switch between yeast and filamentous cells, but not necessary limiting more shapes.
Some diseases caused by this fungi are:
- sporotrichosis
- blastomycosis
- histoplasmosis
- coccidioidomycosis
- paracoccidioidomycosis
- talaromycosis
- candidiasis
Several species of dimorphic fungi are important pathogens of humans and other animals which includes :
- Coccidioides immitis
- Paracoccidioides brasiliensis
- Candida albicans
- Blastomyces dermatitidis
- Histoplasma capsulatum
- Sporothrix schenckii
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Stages of follicular development include in ovulation:
Primordial follicle
Primary follicle
Secondary follicle
Vesicular follicle
Ruptured follicle
Corpus luteum
Corpus albicans
The follicular phase (i.e., follicle formation) starts on day one of a typical 28-day cycle, which is marked by the beginning of menstruation, and lasts until today (i.e., ovulation). At this point, the antral follicle is FSH-dependent and starts to compete for the hormone with other growing follicles.
- Before an ovarian follicle releases its ovum, it goes through a number of unique phases. A limited number of primordial follicles emerge in the fetal ovary throughout the course of the first five months of development. The oocytes in these follicles are enclosed in a single layer of squamous follicular cells.
- There are only a certain number of primordial follicles that are stimulated to form at the beginning of each menstrual cycle. The early primary follicle, which has a core oocyte surrounded by a single layer of cuboidal-shaped follicular cells, is the earliest evident histological stage.
- When a follicular antrum is seen within the granulosa layer, secondary follicles can be distinguished from primary follicles. Hyaluronan and proteoglycan-rich fluid is found in the antrum.
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