Kenichi Mikitani

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Two types (R a1 and R a2) of nucleolus organizers were identified in the genome of Bombyx mandarina (Japan) which occurs in Japan. Genetical analysis of a hybrid with B. mori suggested that the loci of both nucleolus organizers are allelic and correspond to the R 0 locus of B. mori. These nucleolus organizers segregated and were inherited by the progeny in(More)
Insect molting hormones, ecdysteroids, found in natural products so far have steroidal structures. However, nonsteroidal ecdysteroid agonists show promise as a new type of insecticide and may be useful as probes for the biochemical study of ecdysteroids. 3, 5-Di-tert-butyl-4-hydroxy-N-isobutyl-benzamide (DTBHIB), discovered by the combination of the(More)
The 130-kDa insecticidal protein (IP) of Bacillus thuringiensis subsp. aizawai is proteolytically processed in the gut juice of susceptible insect larvae to yield an insecticidally active 60-kDa fragment. Twenty-seven mutant IP genes with the replacement of codons for Arg and Lys with codons for Gln in the active fragment and its adjacent regions of the(More)
Fucoidan is a sulfated polysaccharide that occurs at high levels in some seaweed and in the eggs of sea urchin and bodies of sea cucumbers. Uptake of fucoidan-rich food is suggested to be one of the causes of longevity in Japan. Fucoidan shows anti-coagulant, antivirus, anti-inflammatory, anti-tumor and other various favorable biological activities both in(More)
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