منابع مشابه
Cell cycle analysis and stimulation of rat kangaroo cells (PtK 2 ) after pulse labeling.
out that the DL compounds 5, 8 were prepared from DL-aminobutyric acids. By analogy with the compounds 2 — 2 D and 3 3 D we expect that the biologically active components of the racemates were only their L-forms. All the compounds listed in Table I were subjected to additional topical or injection bioassays on a Pentatomid bug Graphosoma and on pupae of Tenebrio. No JH activity was recorded her...
متن کاملHaploid cells in rat kangaroo corneal endothelium cultures and x-ray-induced chromosome aberrations.
N the reproduction of mammals? germ cells undergo two maturation divisions I to yield haploid gametes which, through union with gametes from the opposite sex, give rise to the next generation. Based on the existence of haploid status in gametes, investigators in the 1940’s and 50’s experimentally induced haploid cells in parthenogenetically developed blastocysts or in very early embryos of rabb...
متن کاملModels, Sherlock Holmes and the Emperor Claudius
Recently, a number of authors have suggested that we understand scientific models in the same way as fictional characters, like Sherlock Holmes. The biggest challenge for this approach concerns the ontology of fictional characters. I consider two responses to this challenge, given by Roman Frigg, Ronald Giere and Peter Godfrey-Smith, and argue that neither is successful. I then suggest an alter...
متن کاملKangaroo rat locomotion: design for elastic energy storage or acceleration?
Mechanical stresses (force/cross-sectional area) acting in muscles, tendons and bones of the hindlimbs of kangaroo rats (Dipodomys spectabilis) were calculated during steady-speed hops and vertical jumps. Stresses were determined from both high-speed ciné films (light and X-ray) and force plate recordings, as well as from in vivo tendon force recordings. Stresses in each hindlimb support elemen...
متن کاملHearing in Glires: Domestic rabbit, cotton rat, feral house mouse, and kangaroo rat
ß Behavioral audiograms were determined for four species of Glires: one Iagomorph (domestic rabbit, Oryctolagus cuniculus) and three feral rodents (cotton rat, Sigmodon hispidus; house mouse, Mus rnuseulus; and kangaroo rat, Dipodomys rnerrlarni). Considerable variation in hearing ability was found among the four species with low-frequency hearing limits ranging over 5-1/2 octaves from 50 (kang...
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ژورنال
عنوان ژورنال: The Journal of the Acoustical Society of America
سال: 1976
ISSN: 0001-4966
DOI: 10.1121/1.2002974