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Blood types and Blood Components › View

White blood cells secrete proteins:

A. known as antibodies, which assist in the immune response.

B. known as viruses, which assist in the immune response.

C. known as bacteria, which assist in the immune response.

D. known as parasites, which assist in the immune response.

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Biology › View

Which gland is helpful in increasing blood calcium levels?

A. Thymus gland

B. Thyroid gland

C. Pineal gland

D. Parathyroid gland

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