"Unicellular" Quotes from Famous Books
 ... indistinguishable, indeed to that postulated epoch when life as it existed on earth was no more complex than it is as it now appears in the one-celled animal. Evolution has taught us that life, however it started, has been one long continuous process which has increased in complexity from the unicellular animals to man. ...
— Human Traits and their Social Significance • Irwin Edman
... of a vegetable nature, were enclosed in two other leaves; but in one of these there was also a small worm much decayed. But the nature of partially digested and decayed bodies, which have been pressed flat, long dried, and then soaked in water, cannot be recognised easily. All the leaves contained unicellular and other Algae, still of a greenish colour, which had evidently lived as intruders, in the same manner as occurs, according to Cohn, within the leaves of this plant ...
— Insectivorous Plants • Charles Darwin
... certain animal parasites, such as trichinae, for example, which multiply in the digestive tract, but whose progeny is limited to a single generation. By common consent the term "infectious" is restricted to those diseases caused by the invasion and multiplication of certain very minute unicellular organisms included under the general classes of bacteria and protozoa. Nearly all the diseases of cattle for which a definite cause has been traced are from bacteria. Among these are tuberculosis, anthrax, blackleg, and ...
— Special Report on Diseases of Cattle • U.S. Department of Agriculture |
