1 is the nostrils
2 is the vomerine teeth
Bivariate cell cycle assay (cyclins/PI) allows to distinguish between G0 and G1 cells, identify mitotic cells, and measure the relate expression of other intracellular proteins to the cell cycle position.
https://www.creative-bioarray.com/bivariate-cell-cycle-assay-cyclins-pi.htm
Answer: Fossils are rare because most remains are consumed or destroyed soon after death. Even if bones are buried, they then must remain buried and be replaced with minerals. If an animal is frozen like the baby mammoth mentioned above, again the animal must remain undisturbed for many years before found.
Explanation:
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