Please heip i am giving away brainiliest for the best answer Which substance produced by the immune system is involved in both active and passive immunity?

A. antibiotic

B. antibody

C. vaccine

d. mucus

no dam links

b

Explanation:

B. Antibody

Explanation:

Trust me I've learned this is middle school

answer; ///i believe that the correct answer is (the worksheet);

the right answer is a. skin cells forming from sunlight.

the liver is an organ endowed with a fantastic ability to regenerate

. thus, if a hepatectomy (ablation) of 70% of the hepatic mass is performed in the rat, there is complete recovery in 7 to 10 days.

prokaryotes are beings that have existed since the existence of life on earth, and do not come from another realm.

ribosomes are organelles that exist naturally in eukaryotes, either in free form or attached to the endoplasmic reticulum.

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