white blood cells

Loving Our White Blood Cells

Our blood contains billions and billions of cells, both white and red. White blood cells are famous for being essential to our immune function. They just serve us, unnoticed, operating in the background. Celebrate your amazing body and ease your stress by coloring our white blood cells coloring page.
What is a Virus

What is a Virus, Anyway?

Dear HCTA, What is a virus, anyway? I don’t get it. TIA, Myrtle, from South Carolina Well, Myrtle, let’s get to the basics. A… Read More