After a few hours this is changed into a reddened pimple, which bears on its summit, usually around a hair, a yellowish blister, or vesicle, which later on becomes red or bluish in color.
"Special Report on Diseases of Cattle"
U.S. Department of Agriculture J.R. Mohler
Others are apparently crystalline in structure, and are spread over the whole surface of the swimming vesicle.
"The Mechanism of Life"
Stéphane Leduc
The first cell gives birth to a second cell or vesicle, and this to a third, and so on, so that we finally obtain an association of microscopic cellular cavities, separated by osmotic walls-a structure completely analogous to that which we meet with in a living organism.
"The Mechanism of Life"
Stéphane Leduc