Question One of my pregnant patients, a 32-year-old woman (gravida 2, para 1), has a flare up of herpes zoster (HZ) at the T11 to T12 dermatomes. This virus, the varicella-zoster virus, causes chickenpox, which can be teratogenic. Is this also true for HZ? Answer Herpes zoster, unlike chickenpox, is ...

One of the most important transboundary animal diseases (TADs) in the southern African region is foot-and-mouth disease (FMD). In this region, a pathway for spread of FMD virus is contacts between cattle and certain species of wildlife. The objective of this study was to evaluate contacts between cattle and wildlife ...

The major alkaloids obtained from Papaver cylindricum Cullen were oripavine, narcotine, thebaine and rhoeadine. Floripavidine, papaverine, salutaridine, armepavine, N-methylasimilobine, scoulerine and cheilanthifoline were obtained as minor alkaloids. There have been no previous reports of alkaloids from P. cylindricum.

NARCOLEPSY IS A DISORDER OF SLEEP CONTROL CHARACTERIZED BY A TETRAD OF SYMPTOMS: sleep attacks, cataplexy, sleep paralysis and hypnagogic hallucinations. A diagnosis is made from a careful history. The incidence is estimated as high as 0.3% of the population. Unfortunately patients go for many years before the diagnosis is ...

The ribbon-like macronucleus of Euplotes eurystomus pinches in half amitotically at each cell division. Several hours before the actual division two lightly staining duplication bands (reorganization bands) appear at the ends of the nucleus and approach each other slowly, finally meeting near the middle. Distal to the bands, that is, ...