(a.) Of or pertaining to Ganoidei. -- n. One of the Ganoidei.
Example Sentences:
(1) In order to understand the process of ganoine formation on the ganoid scales, scale regeneration has been studied to overcome the lack of a growth series of scale ontogeny.
(2) Presumably, high heterogeneity of serum proteins in the ganoids (practically comparable to that in higher vertebrates and man) is necessary for successful work of the most important biochemical system of the blood at all stages of evolutionary development of vertebrates, being of rather ancient origin.
(3) Belozerski and his coworkers [26, 27], based on a detailed study of fish DNA nucleotides, that the Ganoid fish are to be regarded as an independent class.
(4) Oxyntomodulin, glucagon, and a glucagon-like peptide (GLP) have been isolated from the endocrine pancreas of the alligator gar (Lepisosteus spatula), a ganoid fish.
(5) The existence of marrow tissue in cartilaginous ganoid fish, before the evolutionary development of bone, implies that the marrow and bone are two independent organs, developed separately and merged together by evolutionary pressure.
(6) The results show 1) that the young ganoid scales of Polypterus senegalus have a structure similar to that of typical elasmoid scales; and 2) that the isopedin structure does not change during ontogeny and so represents a permanent record of the first ontogenetic stages.
(7) The vascularization of the telencephalic choroid plexus of the sterlet Acipenser ruthenus, a ganoid fish, was examined by vascular corrosion casting and by light and transmission electron microscopy.
(8) Seven stages of ganoid scale regeneration have been defined over a period of five months in the polypterid fish Calamoichthys calabaricus.
(9) The described high heterogeneity of serum proteins in the ganoid fishes is particularly interesting from the standpoint of evolution of fractional composition of proteins in vertebrates.
(10) Such components are also observed in ganoid scales, although embryological data fail to support that lepidotrichial segments are modified scales.
(11) Insulin and a 36-residue peptide with homology to pancreatic polypeptide (PP) were isolated from the endocrine pancreas of the alligator gar (Lepisosteus spatula), a ganoid fish, by gel filtration and HPLC.
Ganoine
Definition:
(n.) A peculiar bony tissue beneath the enamel of a ganoid scale.
Example Sentences:
(1) The lack of dentin in lepidotrichia emphasizes the tendency during evolution toward the reduction of some dermoskeletal components and exemplifies ganoine deposition directly on top of the bone as in holostei scales.
(2) Two novel pyrrole alkaloids--ganoine and ganodine and a novel purine alkaloid ganoderpurine have been isolated from the mycelium of Ganoderma capense (Lloyd)Teng (Polyporaceae) obtained by submerged fermentation.
(3) The outer region is the superficial part of the mature scale (called here osteodentin), which is covered by the ganoine deposited by the epidermal cells.
(4) In order to understand the process of ganoine formation on the ganoid scales, scale regeneration has been studied to overcome the lack of a growth series of scale ontogeny.
(5) This layer is interpreted as "anti-slip pad" or elastic glue anchoring the epidermis on the hypermineralized ganoine.
(6) An irregular patch of ganoine susceptible to erosion by vascular canals lies on top of the cellular bone of the upper surface of the segment.
(7) This layer is progressively mineralized; and finally an organic intermediate layer differentiates between the ganoine, which is a hyper-mineralized tissue, and the overlying epidermis.
(8) On the basis of spectroscopic data their structures were elucidated, ganoine is N-isopentyl-5-hydroxymethyl-pyrryl alldehyde.
(9) Numerous alterations of the epidermal-dermal boundary occur until its disappearance and a thick layer of pre-ganoine is formed.
(10) Consequently, our results allow us to propose that ganoine can be identified as true enamel, although additional data are necessary to analyze the proteinaceous component or its organic matrix.
(11) The components studied are the ganoine-covered lepidotrichia segments and the distally located actinotrichia, the features of which are similar to those in teleosts.
(12) This ultrastructural study demonstrates rather unequivocally the involvement of the inner epidermal layer (IEL) in the appearance and growth of the ganoine.