The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").
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In 1844, Charles Goodyear obtained the first patent for a rubber condom.
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The average adult has about 21 square feet of skin.
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Blood is approximately twice as thick as water because of the cells and other components found in it.
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In 1835 it was discovered that a disease of silkworms known as muscardine could be transferred from one silkworm to another, and was caused by a fungus.
Retrograde pyelography (RP). Note the contrasting of the renal calyces, ureters, and bladder followi
Retrograde pyelogram. A contrast medium is injected into the ureter using a cystoscope, and the X-ra
How lateral inhibition produces contrast enhancement. (Based on Ratliff, 1972.)
The responses of an on-center cell to contrast.
Bar-eye phenotypes in contrast to the wild-type eye in Drosophila