Bacterias destroyed many small ferns in Devonian. [1]
Life Carriers greatly disappointed by reversion of certain primitive plant life to the prechlorophyll levels of parasitic bacteria on such an extensive and unexpected scale that caused many distressful diseases in human species. [2]
The bacteria, simple vegetable organisms of a very primitive nature, are very little changed from the early dawn of life; they even exhibit a degree of retrogression in their parasitic behavior. [3] Mortals contend with diseases by bacteria on all worlds. [4]
The majority of disease-causing bacteria and their auxiliary virus bodies really belong to a group of renegade parasitic fungi that retrograde evolutively. [5]