(1) Lens crystallins were isolated from cephalopods, octopus and squid.
(2) The photopigments, rhodopsin and retinochrome, have been localized in cephalopod retinae using light and electron microscopic immunocytochemical methods.
(3) Occasionally, anti-RALBP antibodies were seen to react weakly with "IRBP" in some cephalopods.
(4) In the cephalopod lens, however, the sum inside was much lower than that outside.2.
(5) We report here that a transparent tissue, derived from muscle but functioning as a lens in the light-emitting organ of a squid, Euprymna scolopes, shows striking biochemical convergence with the epidermally derived ocular lenses of some mammals and cephalopods.
(6) Sequence similarity between this major cephalopod crystallin and glutathione S-transferase were found, which suggested some enzymatic role of crystallins inside the cephalopod lens.
(7) This polyclonal antiserum also cross-reacted with the ALDH-like crystallins found in the ocular lenses of certain mammals and cephalopods.
(8) Screening of lens homogenates for the identification of lactate dehydrogenases was undertaken for the representative species from five major classes of vertebrates plus the cephalopod of invertebrates.
(9) The potential of the [14C]deoxyglucose technique as a powerful tool in studying the functional organization of cephalopod brains is discussed.
(10) Catecholamines and 5-hydroxytryptamine were measured fluorimetrically in nervous tissue of cephalopod molluscs.2.
(11) Fourth, nociception can explain the behavior of insects and perhaps other invertebrates (except possibly the cephalopods).
(12) The photosensitive vesicles of cephalopods are extraocular receptors present either in the mantle or on the head.
(13) A single layer of cell secrets the hard cephalopod beaks.
(14) The total amount of retinochrome in the retina was several times higher than that of rhodopsin, distinguishing the gastropod eye from the cephalopod eye.
(15) The requirement of live marine prey for cephalopod mariculture has restricted its practicality for inland research laboratories, commercial enterprises and home aquarists.
(16) When it comes to the battle of the molluscs, cephalopods win tentacles down.
(17) To clarify the formation process of acid metarhodopsin in the cephalopod rhodopsin cycle, changes in the difference spectrum of squid (Todarodes pacificus) rhodopsin in acid (pH 5.7, or pH 6.1) and alkaline (pH 10.2) solutions were studied at various temperatures by applying the flash photolytic technique.
(18) Crude patterning may take place in the basal and, perhaps, peduncle lobes in cephalopods and in the lower and intermediate medulla in teleosts.
(19) Progesterone and testosterone were obtained from the gonads and liver of cephalopods and from the whole body of crustaceans.
(20) In this respect this retinal-binding protein could have a role very similar to that postulated for the well-known cephalopod retinochrome, that serves to catalyze the formation in the presence of light of 11-cis retinal in photo-receptor cells and to provide it for the reconstitution of rhodopsin during the visual cycle.
Starfish
Definition:
(n.) Any one of numerous species of echinoderms belonging to the class Asterioidea, in which the body is star-shaped and usually has five rays, though the number of rays varies from five to forty or more. The rays are often long, but are sometimes so short as to appear only as angles to the disklike body. Called also sea star, five-finger, and stellerid.
(n.) The dollar fish, or butterfish.
Example Sentences:
(1) The kinetics of the membrane current during the anomalous or inward-going rectification of the K current in the egg cell membrane of the starfish Mediaster aequalis were analyzed by voltage clamp.
(2) Using tubulin immunostaining, we found that 6-DMAP did not affect the cortical microtubules and resting female centrioles of prophase-arrested starfish oocytes, whereas it induced a precocious disappearance of spindle fibers when applied to hormone-stimulated oocytes.
(3) When he sits back at the piano and plays Raspberry Beret and Starfish and Coffee and Girls and Boys, they’re beside themselves, and understandably so: he sounds magnificent.
(4) The cockle Cardium tuberculatum responds with a typical escape movement (jumping by foot contractions) when touched by a starfish.
(5) Since these characteristics of the starfish egg poly(A)+ RNA are similar to those of cyclin mRNAs from sea urchin and surf clam eggs, we synthesized a 50-mer antisense-cyclin oligonucleotide probe coding for a part of the sea urchin cyclin cDNA and used this to screen starfish RNA.
(6) The cellular events that take place during reconstruction of larval forms from dissociated embryonic cells of the starfish are investigated by thick and thin sections.
(7) Primary afferent electrical activity can be recorded from the chemoreceptors on the mantle margin that are responsive to starfish scent and also from other physiologically distinct receptors that are responsive to contact with starfish tube feet.
(8) A cDNA clone encoding starfish cyclin B has been isolated and its sequence determined.
(9) The changes in activity of a cytoplasmic maturation-promoting factor (MPF), capable of inducing resumption of meiosis when injected into starfish oocytes, were examined during mouse oocyte maturation.
(10) 1-Methyladenine (1MeAde) is the naturally occurring maturation-inducing hormone of starfish oocytes.
(11) The marine gastropods Acmaea (Collisella) limatula and Acmaea (Notoacmea) scutum respond to distant predatory starfish (i.e.
(12) "There are a number of threats facing the reef, including climate change, coastal developments, agricultural runoff, ocean acidification and outbreaks of the crown-of-thorns starfish.
(13) Fatty acid hydroperoxides (lipoxygenase products) are metabolized to allene oxides by a type of dehydrase that has been detected in plants, corals, and starfish oocytes.
(14) Ross said researchers have identified four new species of fish, a new type of starfish and several new species of crustaceans living in the deepwater reefs.
(15) An assessment by the Great Barrier Reef Marine Park Authority cited climate change as the leading threat to the coral ecosystem, with pollution, extreme weather events, and a plague of coral-eating starfish also contributing to its malaise.
(16) This has come about because links have been established between two independent areas of research, one based on a genetic approach using the fission yeast Schizosaccharomyces pombe and the second based on a biochemical approach using Xenopus and starfish oocytes.
(17) In the presence of 1 mM hydroxyurea, fertilized eggs of the starfish, Asterina pectinifera, cleaved up to the 256-cell stage and decomposed before blastulation.
(18) Porcine brain tubulin labeled with fluorescein isothiocyanate (FITC) was able to polymerize by itself and co-polymerize with tubulin purified from starfish sperm flagella.
(19) Although caffeine, theophylline, and theobromine supposedly inhibit maturation of oocytes, studies using the starfish oocyte showed that theobromine does not inhibit maturation and the inhibition caused by caffeine and theophylline is reversible.
(20) The acrosome reaction of spermatozoa from the starfish Marthasterias glacialis was induced with the ionophore A23187.