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Biology 13 Online
OpenStudy (anonymous):

please help guys i give medals <3 When a disease-causing agent enters an organism, the immune system alerts which specialized cells? A. red blood cells B. epithelial cells C. white blood cells D. somatic stem cells

OpenStudy (anonymous):

I think it is D.

OpenStudy (anonymous):

it wasn't but thank you anyways.

OpenStudy (anonymous):

Sorry. :(

OpenStudy (anonymous):

No problem

OpenStudy (anonymous):

it's ok ^-^

OpenStudy (anonymous):

That's white blood cells right?

OpenStudy (ittsninaa):

white blood cells

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