Media Repository

Search

Start Over
You searched for: Subject Disease Remove constraint Subject: Disease

Search Results

  1. Electron Micrograph: Leishmania braziliensis promastigotes

    show more
    Description: This is an electron microscopic (EM) image of Leishmania braziliensis promastigotes grown in cell culture. Note the dense kinetoplasts in the cytoplasm of these flagellated forms. Promastigotes are not found in human tissue; this stage occurs in the mid-gut of the sand fly (genera Phlebotomus and Lutzomyia) intermediate hosts. Promastigotes are elongate, slender and measure about 10-12 µm in length. They have a large central nucleus and a kinetoplast located near the anterior end. A flagellum arises at the anterior end, that may be longer than the rest of the promastigote.
    Keywords:

  2. Electron Micrograph: Leishmania major

    show more
    Description: This is an electron microscopic (EM) image of Leishmania major amastigotes grown in cell culture. Note the dense kinetoplasts in the cytoplasm. Amastigotes of Leishmania are spherical to ovoid and measure 1-5 µm long by 1-2 µm wide. They possess a large nucleus, a prominent kinetoplast, and a short axoneme, the last of which is rarely visible by light microscopy. The organisms reside in macrophages of the host and can be found throughout the body.
    Keywords:

  3. Electron Micrograph: Zika virus

    show more
    Description: This is a transmission electron microscopic (TEM) image of Zika virus, grown in LLC-MK2 culture cells, which is a member of the family Flaviviridae. Virus particles are 40 nm in diameter, with an outer envelope, and an inner dense core. Also note the smooth membrane vesicles, which are known to be the replication complex for this virus.
    Keywords: