the tomato fruit borer, helicoverpa armigera (hã¼bner), is a destructive insect pest of many host crops in iran and worldwide. the effect of different tomato cultivars (sun 6108 f1, rio grande ug, korral, ch falat, hed rio grande and cal jn3) was studied on life table parameters of h. armigera under laboratory (25 â± 1 â°c, 65 â± 5% rh and a photoperiod of 16: 8 (l: d) hours), and on the activi...

allogeneic hematopoietic stem cell transplantation (hsct) is a curative treatment option for hematological disorders. cyclosporine (csa) is one of the major immunosuppressive agents for the prophylaxis against graft versus host disease (gvhd). in this retrospective study, we evaluated the effects of csa serum levels on the incidence of acute gvhd and transplant outcomes. 103 adult patients rece...

abstract potato virus a (pva) is one of the members of genus potyvirus. pva particles are straight to slightly flexuous rods and contain of single stranded rna. in the spring and summer of 2005, sampling accomplished to determine potato virus a from potato fields in northern and razavi khorasan provinces. samples with mosaic, shining and rolling of leaves carried in ice chamber to laboratory fo...

semen analysis, sperm dna fragmentation (sdf) and hypo-osmotic swelling test (host) are usually performed for the evaluation of sperm fertilizing ability. there are some debates over the necessity of sdf and host incorporation in male infertility work-up.semen of 77 men was evaluated by sdf and host through three semen analyses. sperm parameters were arranged into different categories: < 5%, 5-...

Brown spot disease caused by Alternaria alternata (Fr.: Fr.) Keissl is a serious problem forproduction of tangerines and tangerine hybrids in Iran. The Tangerine pathotype causes brownspot disease on young leaves and immature fruits of limited varieties of mandarins and tangerines(Citrus. reticulata Blanco). Specificity in the interaction between tangerine and the pathogen isdetermined by a hos...

  The features of Helicobacter pylori adhesins, their interactions with their host counterparts, regulated and selective gene expressions are amongst the many clever strategies this microorganism undertakes to survive the otherwise sterile gastric milieu. The ingenious crafting of these interactions and the respective host reactions govern, in part, an array of consequences ranging from asympto...

the influence of parasitoids on population dynamics is affected by host instar preference. the preference pattern of host instars is not fixed and is modified by the availability and relative abundance of host instars, intensity of defensive behaviors in a particular instar, and also maternal effects of the female forager. in this study, host instar preference of the thelytokous strain of lysip...

Lice are small, wingless, minor ectoparasites of mammals and birds. More than 540&nbsp; blood-sucking lice (Phthiraptera: Anoplura) have been described with each host having its own type of louse, suggesting the cospeciation of the lice species with their host. Among these, two lice species from two different genera infest humans: Pediculus humanus and Phthirus pubis (pubic &ldquo;crab&rdquo; l...