The role is speeding up chemical reactions
Allergic responses to inhaled antigens occur when an individual is first sensitized to the antigen (i.e., the allergen), inducing an immune response and then has a subsequent exposure to the same antigen. The sensitization phase is characterized by <u>Induction of a CD4 T cell type II immune response</u>.
The process by which your body becomes sensitive to a particular substance is called sensitization. When your immune system becomes sensitized to an allergen, you can develop certain symptoms.
Antigens that can induce an allergic response are called allergens, and they are often derived from non-infectious or non-microbial sources.
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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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While it is a common belief to people in the ancient civilisations that the Earth is considered as "flat", the contrary idea that the Earth could be considered as "spherical" was first theorised by the famous ancient philosopher Aristotle when he observed that a circular shadow was cast by the moon during a lunar eclipse.
3.A.Cell wall is 3 this is the layer that surrounds the cell
2.c The chloroplasts are the organelles where photosynthesis occurs
7.e The mitochondria is the organelle where cellular respiration takes place in aerobes
9g The layer that surrounds the nucleus
1.I the colloid inside the cell
4.b. The layer under the cell wall
5.d the system of tubes inside the cytoplasm
f.6 the component that contains the genetic material
5.h the organelle where water is stored
