RHESUS FACTOR
Rhesus factor in some red blood cells in some human beings was named after the rhesus monkey in which it was first discovered. Rhesus factor is an antigen present on the cell membrane of some red blood cells. The people…
CHITIN
Chitin is non living and non-cellular and is secreted by the underlying epidermis. It is a protein-carbohydrate compound. It is composed of several different substances. It is really made up of an outer waxy layer, a middle horny layer and…
MAJOR TOURIST CENTRES IN NIGERIA
1) Azumini Blue River Rose: Azumini Blue River Rose is located in Abia State towards its boundary with Akwa lbom State. The River has become a resort for tourists because of the pleasantness it offers. The attractive features of the…
Study Guide
