Pyramidal Cells of the Brain
The developmental stages exhibited by a pyramidal cell of the brain. Labels: a, neuroblast with rudimentary axon, but no dendrites; b and c, the dendrites beginning to sprout out; d and e, further development of the dendrites and appearance of collateral branches on the axon.
Cunningham, D.J. Textbook of Anatomy (New York, NY: William Wood and Co., 1903)