What useful substance does the blood take in from the intestine?

network of blood capillaries - transports glucose and amino acids away from the small intestine in the blood. internal structure called a lacteal - transports fatty acids and glycerol away from the small intestine in the lymph

scientists have discovered that hiv does not cause aids by the virus's direct effect on the host's immune cells, but rather through the cells' lethal influence on one another. researchers from the gladstone institutes have revealed that hiv does not cause aids by the virus's

in 1859, charles darwin set out his theory of evolution by natural selection as an explanation for adaptation and speciation. he defined natural selection as the "principle by which each slight variation [of a trait], if useful, is preserved".