Ebook BRS Microbiology amp; Immunology (6th edition): Part 2
➤ Gửi thông báo lỗi ⚠️ Báo cáo tài liệu vi phạmNội dung chi tiết: Ebook BRS Microbiology amp; Immunology (6th edition): Part 2
Ebook BRS Microbiology amp; Immunology (6th edition): Part 2
https://khothuvien.cori!MycologyA. Fungi are eukaryotic organisms so they have many similarities to our cells. Differences targetedby antifungals incl Ebook BRS Microbiology amp; Immunology (6th edition): Part 2lude:1Fungal cells have cell walls (CWs).a.Fungal CWs protect cells from osmotic shock, determine cell shapes, and have components that are antigenic.b.Fungal CWs are composed primarily of complex carbohydrates such as chitin with glucans and mannose-proteins. The cw glucan (not found in humans) is Ebook BRS Microbiology amp; Immunology (6th edition): Part 2the antifungal target of the echinocandins like caspofungin.2Ergosterol is the dominant fungal membrane sterol rather than cholesterol, which is an imEbook BRS Microbiology amp; Immunology (6th edition): Part 2
portant difference targeted by imidazoles, triazoles, and polyenes antifungals.B. Types. Fungi include organisms called molds, mushrooms, and yeasts.1https://khothuvien.cori!MycologyA. Fungi are eukaryotic organisms so they have many similarities to our cells. Differences targetedby antifungals incl Ebook BRS Microbiology amp; Immunology (6th edition): Part 2 or septations are cross walls of hyphae and occur in the hyphae of the great majority of the disease-causing fungi. They are referred to as septate (Fig. 7.1).b.Nonseptate or aseptate hyphae lack regularly occurring cross walls. These cells are multinucleate and are also called coenocytic. They oft Ebook BRS Microbiology amp; Immunology (6th edition): Part 2en are quite variable in width with broad branching angles (Fig. 7.2).c.Hyphae may be dematiaceous (dark colored) or hyaline (colorless).d.Fluffy surfEbook BRS Microbiology amp; Immunology (6th edition): Part 2
ace masses of hyqphae and their ■hidden" growth Into tissue or lab medium are called mycelia.2Yeasts are single-celled fungi, generally round to oval https://khothuvien.cori!MycologyA. Fungi are eukaryotic organisms so they have many similarities to our cells. Differences targetedby antifungals incl Ebook BRS Microbiology amp; Immunology (6th edition): Part 2asts when they elongate but remain attached to each other. Candida albicans is notable for developing Into pseudohyphae and true hyphae when It Invades tissues (Fig. 7.4).4Thermally dimorphic fungi are fungi capable of converting from a yeast or yeastlike form to a filamentous form and vice versa.a. Ebook BRS Microbiology amp; Immunology (6th edition): Part 2Environmental conditions such as temperature and nutrient availability trigger changes.b.They exist in the yeast or a yeastlike form in a human and asEbook BRS Microbiology amp; Immunology (6th edition): Part 2
the filamentous form in the environment. "Yeastie beasties in body heat; bold mold in the cold."c.They include the major pathogens: Blastomyces, Histhttps://khothuvien.cori!MycologyA. Fungi are eukaryotic organisms so they have many similarities to our cells. Differences targetedby antifungals incl Ebook BRS Microbiology amp; Immunology (6th edition): Part 2.161162 BRS Microbiology and ImmunologyFIGURE 7.1. Septate hyphae. (Courtesy of Glenn D. Roberts, PhD. Mayo Clinic, Rochester, MN.IFIGURE 72. Nonscptate hyphae. (A) The width of the hyphae is much broader. The hyphae fold and collapse on themselves. IB) The other material in the field (creating the Ebook BRS Microbiology amp; Immunology (6th edition): Part 2bright dots of light) are debris from human cells that have been lysed by mounting the necrotic tissue in KOH (potassium hydroxide). (Courtesy of GlenEbook BRS Microbiology amp; Immunology (6th edition): Part 2
n D. Roberts, PhD, Mayo Clinic. Rochester, MN.)EEESĐ Mycology 163FIGURE 7.3. Budding yeasts. (A) Lactophenol blue stained budding yeasts. (B) Budding https://khothuvien.cori!MycologyA. Fungi are eukaryotic organisms so they have many similarities to our cells. Differences targetedby antifungals incl Ebook BRS Microbiology amp; Immunology (6th edition): Part 2n Õ. Roberts, PhD, Mayo Clinic, Rochester, MN )FIGURE 7.4. Pseudohyphae. When yeasts like Carulùkt albicans bud but do not separate and continue to elongate, the result is pscudohyphae. Note the sausagelike constrictions between the cells. (Courtesy ot Glenn D. Roberts. PhD. Mayo Clinic. Rochester. Ebook BRS Microbiology amp; Immunology (6th edition): Part 2MN.)5Fungal spores are formed either asexually or by a sexual process involving nuclear fusion and then meiosis. Fungal morphology including spores maEbook BRS Microbiology amp; Immunology (6th edition): Part 2
y be used in identification.a.Conidia are asexual spores of filamentous fungi (molds) or mushrooms (Fig. 7.GA).b.Blastoconidia are the now yeast "budshttps://khothuvien.cori!MycologyA. Fungi are eukaryotic organisms so they have many similarities to our cells. Differences targetedby antifungals incl Ebook BRS Microbiology amp; Immunology (6th edition): Part 2robiology and ImmunologyFIGURE 7.5. Blastomyces is a dimorphic hmgus. Shown here are the hyphal and tissue forms. (A) Hyphal form. This photo shows the environmental hyphae and conidia of Blastomyces dcrmatitidis. (B) Tissue form of the budding yeast. Note Blastomyces big yeasts with the thick cell Ebook BRS Microbiology amp; Immunology (6th edition): Part 2wall and the broad base between the mother cell and the bud (seen in the insetl. (Courtesy of Glenn 0. Roberts, PhD, Mayo Clinic, Rochester, MN.)FIGUREbook BRS Microbiology amp; Immunology (6th edition): Part 2
E 7.6. Common spore types. (A) Conidia (B) Blastocomdia, commonly called buds (C) Strands of hyphae breaking up into arthroconidia. Arthroconidia may https://khothuvien.cori!MycologyA. Fungi are eukaryotic organisms so they have many similarities to our cells. Differences targetedby antifungals incl Ebook BRS Microbiology amp; Immunology (6th edition): Part 2nidia may also be produced by Coccidioidcs immitis (see Fig. 7.3A). (Courtesy of Glenn D. Roberts, PhD, Mayo Clinic, Rochester. MN.)https://khothuvien.cori!MycologyA. Fungi are eukaryotic organisms so they have many similarities to our cells. Differences targetedby antifungals inclGọi ngay
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