The Chemical Composition of Lambda in Paramecium aurelia, Stock 299
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منابع مشابه
Cortical Ultrastructure of Paramecium Aurelia
Two methods have been devised for the isolation of large quantities of purified pellicles (cortical layers) of Paramecium aurelia. Pellicles isolated by both procedures, when examined by electron microscopy, were found to contain ciliary basal bodies, two types of cortical membranes, ribbons of microtubules, kinetodesmal fibers, and elements of the infraciliary lattice system. By electron micro...
متن کاملThe classes of kappa in Paramecium aurelia.
Kappas (bacterial symbionts containing R bodies) have been studied in 16 strains of Paramecium aurelia, syngens 2 and 4. All produce toxins capable of killing sensitive paramecia. The first major class, the 51 group (consisting of the kappas of strains 51, 116, and 298), has R bodies which, when the pH is lowered below 6-5, unwind reversibly from the inside to form a tight tube; the outside end...
متن کاملThe classes of endosymbiont of Paramecium aurelia.
The endosymbionts of Paramecium aurelia appear to consist of a number of different Gramnegative bacteria which have come to live within many strains of paramecia. It is not known whether in nature this relationship is mutually beneficial or not. The symbionts from one paramecium may kill other paramecia lacking that kind of symbiont. We identify the following classes of endosymbiotic organisms....
متن کاملThe Fine Structure of Kappa in Killer Stock 51 of Paramecium aurelia. Preliminary Observations
The killer trait in Paramecium aurdia depends upon the presence of a cytoplasmic genetic particle, kappa (1). Animals possessing kappa liberate into the culture medium in which they live a poison, paramecin, to which they themselves are resistant; animals lacking kappa are killed by this substance. Stained preparations and phase microscope observations of fixed and unfixed kappa reveal, in stoc...
متن کاملAn examination into the phenomenon of granulation, in mu particles of stock 540 Paramecium aurelia.
Mu particles are endosymbionts found in the cytoplasm of Paratnecium aurelia (Sonneborn, 1959; Preer, 1967; Beale, Jurand & Preer, 1969; Jurand & Selman, 1969). They are responsible for the phenomenon of mate-killing (Siegel, 1954; Beale, 1957) but can be removed from stock 540 paramecia by a variety of methods (Beale, 1957; Gibson & Beale, 1962; Franklin, 1973). The technique used by Beale (19...
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ژورنال
عنوان ژورنال: Journal of General Microbiology
سال: 1963
ISSN: 0022-1287
DOI: 10.1099/00221287-33-3-395