<span>As far as I remember, cell-mediated immunity differs from humoral immunity in that </span>they respond differently to invaders
Carbon products are obtained by heating coal (to give coke), natural gas (to give blacks), or carbonaceous material of vegetable or animal origin, such as wood or bone (to give charcoal), at elevated temperatures in the presence of insufficient oxygen to allow combustion.
PH3
Also known as phosphine
Opposite ions attract each other
<span>sharing of outer shell</span>
