Biochemical Role of Vitamin A in Vision
1.0 INTRODUCTION Vitamin A is a group of unsaturated nutritional organic compounds that includes retinol, retinal, retinoic acid, and several provitamin A carotenoids (most notably beta-carotene). Vitamin A has multiple functions: it is important for growth and development, for the maintenance of the immune system and good vision (Fennema, 2018). Vitamin A is needed by the retina of the eye in the form of retinal, which combines with protein opsin to form rhodopsin, the light-absorbing ...
PATTERNS OF TRANSMISSION, PREVALENCE AND INTENSITY OF SOIL TRANSMITTED HELMINTHIASIS IN NSUKKA ZONE, ENUGU STATE, NIGERIA
ABSTRACTThe study assessed the prevalence, intensity and environmental risk factors affecting thetransmission of soil transmitted helminthiasis in eleven randomly selected communities inNsukka and Uzouwani Local Government Areas of Enugu State, Nigeria. It also determinedthe effect of peoples’ knowledge of mode of transmission of the diseases and access tofacilities for water supply and sanitation in each of the communities. This is with a view togaining insight into the patterns of transmi...