I believe the answer you are looking for is secondary regrowth. Hope this helps
Answer: viewing red blood cells
Explanation:
Tissues samples, blood, pond microorganisms, and cells are some things you can see under this specific microscope. This is because they are most useful to see cells and small things.
The answer to this question in the phase Interphase when the chromosomes replicate to form joined sister chromatids , and also the dna gets replicated