In Neurospora crassa, sequence-specific inhibition of endogenous genes can be induced by the introduction of transgenic DNA homologous to the target gene, through the mechanism of post-transcriptional gene silencing (PTGS) known as quelling. The application of this strategy to inactivate genes in N. crassa has, to date, been restricted by a limited silencing efficiency and instability of the si...

The complete amino acid sequence of Neurospora crassa cytochrome c has been determined. The molecule consists of a single polypeptide chain containing 107 residues. The NH2-terminal residue is glycine, and the COOH-terminal residue is alanine. There are 39 amino acid differences between the cytochromes of N. crassa and those of the yeast Saccharomyces cerevisiae, whereas there are 43 amino acid...

Alveolar echinococcosis (AE) caused by Echinococcus multilocularis can infect humans as a dead-end host. They matured in canid’s intestine (e.g. foxes, jackals, wolves, dogs, cats, etc.). AE is seen across the world. It has a high prevalence in the central and northern parts of Europe, North America and Asia. The prevalence of AE was low in the past, even in hyper endemic regions. But in ...

T IS possible by means of X-ray or ultraviolet treatment to produce mutant I strains of Neurospora crassa that are deficient in their abilities to synthesize specific vitamins, amino acids, or other essential substances (BEADLE and TATUM 1941; TATUM and BEADLE 1g4zb). It occurred to us that it might be possible to determine whether the mutant genes concerned in such haploid strains are recessiv...

Dear Editor, Azathioprine, a steroid sparing immunosuppressant, is used in organ transplantation and various immunological diseases like pemphigus vulgaris, pemphigus foliaceous, vitiligo, lichen planus, and alopecia areata. Anagen effluvium (AE) is the abrupt loss of hairs in their growing phase most commonly due to chemotherapy and radiation 1. Azathioprine can cause AE in association with my...

studies of postmeiotic chromosomes have been impeded by the thick exine of immature pollen grains. chromosome staining of immature and adult pollen grains through conven-tional acetocarmine procedure is tedious and often leads to unsatisfactory results. an acetocarmine stain, used in conjugation with carnoy’s solution as fixative for 72 hrs or until the chlorophyll-containing tissues of spike b...

Interspecific mating between Aedes albopictus males and Ae. aegypti females was detected in the field using mark-release-recapture techniques. By 3 days after the release of virgin Ae. aegypti females into a field site containing only Ae. albopictus, 100% of the captured females were inseminated. Laboratory investigations indicated that male Ae. albopictus were very proficient at inseminating A...