The implications of a carrier model of ion and substrate cotransport are worked out. Each carrier is assumed to have one ion and one substrate binding site. The model includes features that have not been included in previously published models. These features are the effect of the membrane potential and of the assumption that all carrier forms, with or without bound substrate and with or withou...

background: asymptomatic malaria infection provides a reservoir of parasites, causing the persistence of malaria transmission. it accounts an important challenge for successful management of the control, elimination, and eradication programmes in any malaria-endemic region. this investigation was designed to assess the presence and the prevalence of asymptomatic carriers in iranshahr district o...

BACKGROUND Infection with hepatitis B virus (HBV) in pregnant women may be a threat for both mothers and fetuses. This study was performed to explore the impact of maternal HBV carrier status on pregnancy outcomes. METHODS We conducted a prospective cohort study at the Obstetrics & Gynecology Hospital of Nantong University between January 1, 2012 and September 30, 2015. A consecutive sample o...

background: equine piroplasmosis (ep) is the cause of persistent tick-borne infection with no symptoms, but the most important problem of ep is due to the persistent carrier state. carrier animals to babesia ( theileria ) equi (laveran 1901) and b. caballi (nuttall, 1910) infestation could be identified by extremely sensitive pcr-based method. the purpose of this study was to identify the causa...

introduction:foreign body aspiration is usually a serious condition that is most common among the pediatric population, and rare in adults. in adults, aspiration may be tolerated for a long time.case reports:our first case is a 38-year-old man who presented with a 2-day history of swallowing a foreign body. he was completely asymptomatic. chest x-ray revealed the presence of 5-cm foreign object...

Newcastle Asymptomatic Bacteriuria Research Group (1975). Archives of Disease in Childhood, 50, 90. Asymptomatic bacteriuria in schoolchildren in Newcastle upon Tyne. A screening survey for asymptomatic bacteriuria (ASB) in 13 464 schoolgirls aged 4 to 18 years in Newcastle upon Tyne showed an overall prevalence of 1 *9%. In girls aged 4 to 6 years it was 1 4%, in girls aged 7 to 11 years it wa...