We have studied dodecylmaltoside-induced echinocyte-spheroechincyte-spherocyte shape transformation and membrane vesiculation using transmission electron microscopy (TEM) on freeze-fracture replicas. It is indicated that spherical erythrocyte shape at higher dodecylmaltoside concentration is formed due to loss of membrane in the process where small, mostly tubular nanovesicles are released pred...

Strelkovimermis spiculatus n. sp. (Mermithidae: Nematoda), a parasite of the mosquito Aedes albifasciatus Mac. in Argentina, is described. Diagnostic characters of this species include a ventrally shifted mouth opening and spicules fused at the tips. The mermithid has been reared on Culex pipiens L. larvae in the laboratory.

Two species of Skrjabinura Gnedina, 1933, were collected in the intestines of birds from the Area de Conservación Guanacaste (ACG), Costa Rica. Skrjabinura mesoamericana n. sp. inhabits Dendrocincla homochroa, Calocitta formosa, Dendrocolaptes certhia, Basileuterus rufifrons, and Chordeiles acutipennis. The new species differs from all species of the genus by having dissimilar spicules, the rig...

Bony fragments in the uterus occur after second trimester termination of pregnancy following retained fetal bones. Very rarely, they can form following first trimester loss. Clinical symptoms range from pain, menstrual symptoms, and infertility. Ultrasound shows a hyperechoic shadow, and treatment is by curettage or hysteroscopic removal.

The trichodysplasia-spinulosa polyomavirus-associated (TSPyV) was first described in a solid organ transplant recipient with a rare skin disease. Initially mistaken as a side effect of cyclosporine treatment, the disease trichodysplasia-spinulosa (TS) is characterized by the development of keratin spines (spicules), follicular papules, hair follicle dilation and keratotic plugging of the infund...

HYPOTHESIS Anatomic differences may render the superior division of the vestibular nerve more susceptible to injury during vestibular neuritis. BACKGROUND Neural degeneration has been identified in temporal bone studies of vestibular neuritis. Previous anatomic and physiologic studies of vestibular neuritis have demonstrated that the superior division of the vestibular nerve is preferentially...