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Human cancer cells with nuclei (specifically the DNA) stained blue. The central and rightmost cell are in interphase, so the entire nuclei are labeled
Human cancer cells with nuclei (specifically the DNA) stained blue. The central and rightmost cell are in interphase, so the entire nuclei are labeled. The cell on the left is going through mitosis and its DNA has condensed.
Matthias Jakob Schleiden (1804–1881)
Matthias Jakob Schleiden (1804–1881)
Theodor Schwann (1810–1882)
Theodor Schwann (1810–1882)
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Biology is the science of life. It spans multiple levels from biomolecules and cells to organisms and populations.
Biology is the science of life. It spans multiple levels from biomolecules and cells to organisms and populations.
Diagram of a fly from Robert Hooke's innovative Micrographia, 1665
Diagram of a fly from Robert Hooke's innovative Micrographia, 1665
In 1842, Charles Darwin penned his first sketch of On the Origin of Species.
In 1842, Charles Darwin penned his first sketch of On the Origin of Species.
The (a) primary, (b) secondary, (c) tertiary, and (d) quaternary structures of a hemoglobin protein
The (a) primary, (b) secondary, (c) tertiary, and (d) quaternary structures of a hemoglobin protein