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Adapoids and omomyoids had longer snouts and are the first “true” primates.
Red cells have a biconcave shape.
Schematic diagram showing polyclonal response by B cells against linear epitopes.
Over time, cells acquire mutations. Two independently acquired mutations in the same cell may be suf
X-ray showing pneumonia. Fluid and blood cells fill the lungs
Lederberg and Tatum’s detection of recombination between auxotrophic E. coli cells