منابع مشابه
Modulation of radula opener muscles in Aplysia.
We observed fibers immunoreactive (IR) to serotonin (5-HT), the myomodulins (MMs), and FMRFamide on the I7-I10 complex in the marine mollusk Aplysia californica. The I7-I10 muscle complex, which produces radula opening, is innervated primarily by one motor neuron, B48. B48 is MM-IR and synthesizes authentic MM(A). When B48 is stimulated in a physiological manner, cAMP levels are increased in op...
متن کاملCryopreservation of Gemmae from the Liverwort Marchantia polymorpha L.
The liverwort Marchantia polymorpha L. is one of the key model plants in evo-devo studies, and an increasing number of transgenic and mutant lines have been established. For reliable long-term preservation of M. polymorpha plants, spores have been used, but crossing is indispensable to obtain them. Gemmae, however, are vegetative clones and readily available in large numbers without crossing, t...
متن کاملInvestigation of antimicrobial activity of Pelargonium radula (Cav.) L'Hérit.
Antimicrobial activities of two ethanolic extracts, made from fresh and dried leaves of Pelargonium radula (Cav.) L'Hérit, were tested against fourteen species of bacteria and fifteen species of fungi. The well-diffusion method indicated the strongest activity against Pseudomonas aeruginosa. The broth dilution method revealed that the most sensitive microorganisms were Bacillus pumilus, Bacillu...
متن کاملA study of the replacement mechanism of the pulmonate radula
Results obtained from a histological, autoradiographic, and operative investigation of the radulae of two pulmonates have led to the formulation of the following theory of radula replacement. The radula is secreted continually by the permanent odontoblasts and continually moves anteriorly. The superior epithelium of the radular gland is produced by division of cells near the odontoblasts and mo...
متن کاملThe Histochemistry of the Radula of Patella vulgata
When first secreted the radula consists of chitin and protein. In the bases and cusps of the teeth the reactions for tyrosine, tryptophane, and chitin become negative, and are replaced by reactions for amino groups and argentaffin material. The bases of the teeth become impregnated with iron. Subsequently the reactions for amino groups and argentaffin material become negative in the cusps and t...
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ژورنال
عنوان ژورنال: Botanical Gazette
سال: 1913
ISSN: 0006-8071
DOI: 10.1086/331157