An excretory function is one that collects and removes harmful waste products from the body. Which of the following pairs of organ systems do NOT have an excretory function? a) lungs, large intestine
b) heart, kidney
c) skin, lungs
d) kidney, lungs

the answer to your question is b

protocol for imps extraction focusing on membrane protein extraction, solubilisation, and purification.

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

geologic time scale (for gradpoint) =)