A. W. A. BROWN It is now 21 years since DDT -resistant house flies were first discovered in northern Sweden, and since the report of Wilson and Gahan that a DDT -resistant strain could be produced by laboratory selection at Orlando. Although the resistance of the San Jose scale to lime-sulfur was detected by Melander in Washington state nearly 60 years ago, the resistance problem as we know it ...

following annual report of new cases of cutaneous leishmaniasis from different areas of kuhpayeh district, esfahan county, an investigation was carried out on some ecological aspects of phlebotomine sand flies during 2000-2002. sand flies were collected biweekly from outdoor and indoor resting places with the aid of 30 sticky traps from the be ginning to the end of the active season. female san...

that the authors conclude that Drosophila can be used as an instrumental model to elucidate the role of immune response as regulators of neuroprotection. In addition to Drosophila , much has been learnt from studying the zebrafish (Danio rerio) , appearing as an early vertebrate during evolution. The zebrafish has become an important organism for exploring defense mechanisms in innate immune re...

Larvae of a new species of Psychodinae, Moruseodina cusucoensis gen. et sp. nov., were collected during a biodiversity survey of aquatic invertebrates in plant held water bodies (phytotelmata) in Cusuco National Park, Honduras. The fourth instar larva, pupa and adult male are described based on reared material. The new species was difficult to place in an existing genus, thus a new genus name i...

background: wolbachia  are common intracellular bacteria that infect different groups of arthropods including mos­quitoes. these bacteria modify host biology and may induce feminization, parthenogenesis, male killing and cyto­plasmic incompatibility (ci). recently wolbachia  is being nominated as a bio-agent and paratransgenic candidate to control mosquito borne diseases. methods: here we repor...

a radio assay employing 14c-uridine to measure the intracellular killing of candida albicans by phagocytes is presented. the principle of this new method is that after killing of candida albicans by phagocytes rna synthesis stops and therefore uridine uptake is diminished whilst viable candida in cultures would take up uridine and as a result, high cpm counts can be obtained within 135 min. of ...

Phage therapy against bacterial pathogens has been resurrected as an alternative and supplementary anti-infective modality. Here, we observed that bacterial group motilities were impaired in Pseudomonas aeruginosa strain PA14 lysogens for some temperate siphophages; the PA14 lysogens for DMS3 and MP22 were impaired in swarming motility, whereas the PA14 lysogen for D3112 was impaired in twitchi...