Biomaterial Database

Freeze-etching observations of Trichophyton Violaceum. 1977

T Hasegawa, and E Nakai, and V S Rajan

Trichophyton violaceum was cultured on a Sabouraud's dextrose agar slants for freeze-fracture replication. It was cryoprotected with glycerol and sucrose. The surface structure of the cell wall showed a rodlet pattern. Invagination-like craters were observed in the plasmalemma. The nuclear envelope with pores, mitochondria, and vacuoles were clearly shown. Three-dimensional views of the fine structure were presented.

UI	MeSH Term	Description	Entries
D009685	Nuclear Envelope	The membrane system of the CELL NUCLEUS that surrounds the nucleoplasm. It consists of two concentric membranes separated by the perinuclear space. The structures of the envelope where it opens to the cytoplasm are called the nuclear pores (NUCLEAR PORE).	Nuclear Membrane,Envelope, Nuclear,Envelopes, Nuclear,Membrane, Nuclear,Membranes, Nuclear,Nuclear Envelopes,Nuclear Membranes
D002473	Cell Wall	The outermost layer of a cell in most PLANTS; BACTERIA; FUNGI; and ALGAE. The cell wall is usually a rigid structure that lies external to the CELL MEMBRANE, and provides a protective barrier against physical or chemical agents.	Cell Walls,Wall, Cell,Walls, Cell
D003593	Cytoplasm	The part of a cell that contains the CYTOSOL and small structures excluding the CELL NUCLEUS; MITOCHONDRIA; and large VACUOLES. (Glick, Glossary of Biochemistry and Molecular Biology, 1990)	Protoplasm,Cytoplasms,Protoplasms
D005613	Freeze Etching	A replica technique in which cells are frozen to a very low temperature and cracked with a knife blade to expose the interior surfaces of the cells or cell membranes. The cracked cell surfaces are then freeze-dried to expose their constituents. The surfaces are now ready for shadowing to be viewed using an electron microscope. This method differs from freeze-fracturing in that no cryoprotectant is used and, thus, allows for the sublimation of water during the freeze-drying process to etch the surfaces.	Etching, Freeze
D014249	Trichophyton	A mitosporic fungal genus and an anamorphic form of Arthroderma. Various species attack the skin, nails, and hair.	Endodermophyton,Trychophyton,Endodermophytons,Trichophytons,Trychophytons
D014617	Vacuoles	Any spaces or cavities within a cell. They may function in digestion, storage, secretion, or excretion.	Vacuole