The immune system has many kinds of white blood cells to fight infections. HIV finds the white blood cells, called CD4 cells. But with cancer the white blood cells are being killed off.
D) all of above
Explanation:
Essays, fiction and biographies can be used as strategy and source of making inferences while reading.
Journals and publications are also good strategical resources during reading.
- An essay is usually an analytic or descriptive composition about a subject.
- A fiction is work that is based on imagination and it is not true most of the times.
- A biography is an account of one's life history.
All of these can be cited a source while researching and reading.
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B) cod is the answer im sure
<span>The most common type is simple columnar epithelial cells. These cells help the stomach resist degradation by the lumen during digestion. In addition, these cells secrete substances like mucous, HCl, and pepsinogen. All these secretions are necessary for proper digestion to take place.</span>