There are several varieties of cancers, such as hard, soft, and colloid, but only those growing on the surface will be mentioned here.
"Special Report on Diseases of Cattle"
U.S. Department of Agriculture J.R. Mohler
There is no real difference between the passage of a solution through an osmotic membrane and its diffusion through a colloid.
"The Mechanism of Life"
Stéphane Leduc
This is not a chemical action, for an exceedingly small quantity of an electrolyte is able to precipitate an indefinite quantity of the colloid.
"The Mechanism of Life"
Stéphane Leduc