Ultrastructural Studies on Blood-Sucking Tabanid

Experimental Study of Tabanid Polarotaxis, Host-Tabanid Interaction and Polarization Tabanid Traps Summary of Ph.D. Thesis

Ultrastructural studies on mitochondrial swelling.

Mitochondrial swelling induced by valinomycin, calcium chloride and P(i) was studied after potassium permanganate fixation in suspension. Valinomycin induces a rapid K(+) influx, increase of the matrix space and out-folding of the cristae, with good preservation of the matrix material. This swelling is reversible but the cristae do not completely re-form and have a blebbed appearance. On repeat...

Spottier Targets Are Less Attractive to Tabanid Flies: On the Tabanid-Repellency of Spotty Fur Patterns

During blood-sucking, female members of the family Tabanidae transmit pathogens of serious diseases and annoy their host animals so strongly that they cannot graze, thus the health of the hosts is drastically reduced. Consequently, a tabanid-resistant coat with appropriate brightness, colour and pattern is advantageous for the host. Spotty coats are widespread among mammals, especially in cattl...

Ultrastructural Studies on Human Myeloma Plasmacytes1

Myeloma plasmacytes were studied in six untreated pa tients to obtain more information on the nuclear ultrastruc tural abnormalities in these cells. Asynchrony of nucleolar, nuclear, and cytoplasmic maturation was frequently ob served in pleomorphic myeloma plasmacytes. Immature and mature myeloma plasmacytes of two patients contained intranuclear rodlets which consisted of fine filaments ar ra...

Ultrastructural Studies on the Lymphatic Anchoring Filaments

The fine structure of the lymphatic capillary and the surrounding tissue areas was investigated. Instead of a continuous basal lamina (basement membrane) surrounding the capillary wall, these observations revealed the occurrence of numerous fine filaments that insert on the outer leaflet of the trilaminar unit membrane of the lymphatic endothelium. These filaments appear as individual units, or...