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421.
G P Kononenko A A Burkin E B Zotova N A Soboleva 《Prikladnaia biokhimiia i mikrobiologiia》1999,35(2):206-211
A varriant of competitive ELISA, making it possible to detect fumonisin B1 (up to 0.4 ng/well) was developed, based on the use of specific polyclonal antibodies obtained by immunization of rabbits with a horseradish peroxidase conjugate of fumonisin B1. The minimum concentration of fumonisin B in water-acetonitrile extracts of corn grain, dry corn products, and feeds, detected by the ELISA version developed is 0.2 mg/kg. 相似文献
422.
Dr. Yuri V. Panchin Pavel V. Zelenin Lyudmila B. Popova 《Invertebrate neuroscience : IN》1997,3(1):27-40
The neural network underlying rhythmic wing movements in the molluscClione limacina is well-studied. Two different groups of motoneurons innervate two distinct groups of wing muscles. The locomotor rhythm
generated in the left and right pedal ganglia is synchronized by interneurons. When the axons of the locomotor motoneurons
are crushed, numerous fine neurites sprout towards the denervated muscles and reach them in 8–15 days. At this stage motoneurons
project to and synapse on not only correct but equally incorrect muscle targets. After 2 weeks of regeneration the number
of incorrect neurites and synaptic connections begins to decrease and following 1.5–2 months all incorrect connections are
eliminated, incorrect axons are withdrawn and the behavioral deficit is compensated. In this study the regeneration of interneurons
and the growth profiles of inter- and motoneurons were also studiedin vitro. Two individually isolated pedal ganglia were co-cultured in three different configurations: a) the wing nerve stump from
one ganglion was fixed against the commissural stump from another ganglion; b) the wing nerve stumps were fixed against each
other; c) the commissural stumps were fixed against each other. Under the above experimental conditions we found that the
interneurons were able to cross only the contact between two commissural stumps, and in this case found their original targets,
restored correct connections and synchronized the rhythm in two pedal ganglia. In contrast, motoneurons were able to cross
all types of contacts. 相似文献