The New Encyclopædia BritannicaEncyclopædia Britannica, 1983 - Encyclopedias and dictionaries |
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Page 127
... animals , as well as living things in which specific micro - organisms , added by experimental methods , are known to be pres- ent . When one or more known species of micro - organ- isms are added experimentally to a germfree plant or ...
... animals , as well as living things in which specific micro - organisms , added by experimental methods , are known to be pres- ent . When one or more known species of micro - organ- isms are added experimentally to a germfree plant or ...
Page 129
... animal becomes an experimental base , or control animal ; animals containing micro - organisms are in a more complex experimental condition . METHODS Isolation . Physical methods of isolating a desired or- ganism from a group of micro ...
... animal becomes an experimental base , or control animal ; animals containing micro - organisms are in a more complex experimental condition . METHODS Isolation . Physical methods of isolating a desired or- ganism from a group of micro ...
Page 130
... animals can be questioned since radiation is known to activate viruses in all germfree mice and in some strains of germfree rats . Oral inoculation of germfree animals with one or more pure cultures of micro - organisms is used to study ...
... animals can be questioned since radiation is known to activate viruses in all germfree mice and in some strains of germfree rats . Oral inoculation of germfree animals with one or more pure cultures of micro - organisms is used to study ...
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animals appear authority became become called central central Europe century changes church cities common complete contain continued cultural early East economic effect elected empire English especially established Europe Federal figures force France French German glacier glass gold golf grammar Greece Greek important increased industry influence interest Italy king known Lake land language later leading less living major mass material means measure ment Michigan natural occur Open origin Party percent period Persian played Pleistocene political population position present princes produced Proto-Indo-European range regions remained Republic result River rock Roman social sources structure success surface territorial tion trade traditional United West western