PURPOSE Ionizing radiation is a well-established carcinogen in rodent models and a risk factor associated with human cancer. We developed a mouse model that captures radiation effects on host biology by transplanting unirradiated Trp53-null mammary tissue to sham or irradiated hosts. Gene expression profiles of tumors that arose in irradiated mice are distinct from those that arose in naïve hos...

Human cytomegalovirus (HCMV) is a ubiquitous virus whose sole host is humans. Since HCMV can contagion from person to person through numerous ways, vast populations of humans are infected. HCMV infections can potentially have a range from asymptomatic infection in immuno-competent hosts to life-threatening diseases in organ recipients and patients with AIDS. The present article reviews the occu...

Blastocystis hominis is a worldwide distributed microorganism with no definite host. In addition to human beings it has been diagnosed in variety of animals. This organism which is abundantly found in routine stool examinations and also 'in some cases has been identified as a factor causing severe diarrhea, earlier regarded as a fungi. Later it was distinguished as cyst of intesinal Trichomonas...

this guide to the identification of iranian freshwater snails has been prepared with aim of helping individuals involved in field work, but who have had no specialized training in taxonomy to differentiate snail specimens which they collect to certain groups by means of simple identification key. the guide pays special attention to the principal snail groups which transmit human schistosomiasis...