Such observations might seem ho-hum today, but they were unprecedented at the time. Robert Hooke had coined the word “cell”—short for cellula, or “small compartment” in Latin—in the mid-17th century, ...

coli infections and sends letters to other stem cell companies reminding them to follow the rules. How a dinner-table conversation between two biologists led to the formulation of the theory that ...

However, Schwann, one of the early proponents of the cell theory, had already recognized this possibility in 1839 when he stated, ‘We have seen that . . . cells are formed and grow in accordance ...