(n.) Any one of numerous species of pulmonate arachnids of the order Scorpiones, having a suctorial mouth, large claw-bearing palpi, and a caudal sting.
(n.) The pine or gray lizard (Sceloporus undulatus).
(n.) The scorpene.
(n.) A painful scourge.
(n.) A sign and constellation. See Scorpio.
(n.) An ancient military engine for hurling stones and other missiles.
Example Sentences:
(1) Veratridine and the sea anemone toxin on one hand as well as veratridine and the scorpion toxin on the other hand are synergistic in their action to stabilize an open and highly permeable form of the sodium channel.
(2) We have previously shown that the [3H]saxitoxin binding site of the sodium channel is expressed independently of the [125I]scorpion toxin binding site in chick muscle cultures and in rat brain.
(3) The labelled peptide is bound to mouse diaphragm from where it can be displaced by ATX II and, even better, by scorpion neurotoxin but not by other basic peptides, e.g., histone or aprotinin.
(4) A graded depolarization accompanied by nerve impulses can be recorded from the scorpion lateral and median eyes in response to light.
(5) We found that HIV Nef shares sequence and structural features with scorpion peptides known to interact with K+ channels.
(6) Although the insect-directed toxin has one atypical disulfide bridge, the general structural features of the scorpion toxin family, including the presence of a "conserved-hydrophobic" surface, seem to be well-conserved.
(7) To study the site of interaction, the effects of lidocaine, carbamazepine and another anticonvulsant drug, phenytoin on scorpion venom-enhanced specific binding of [3H]batrachotoxinin A 20-alpha-benzoate to the sodium channel gating complex were examined in vitro in a rat brain hippocampus preparation.
(8) The complete amino acid sequence (64 residues) of the AaH IV toxin from the scorpion Androctonus australis Hector was determined by automated Edman degradation and was compared with the sequences of other Androctonus toxins.
(9) 62 patients who had been stung by a red scorpion were admitted from January to December 1990: 18 with hypertension, 15 with supraventricular tachycardia, 11 with pulmonary oedema, and 18 with local pain at the site of sting but no systemic involvement.
(10) We claim that periodic waves mark the activity of a suboesophageal pace-maker and we propose a system of two pace-makers to explain the visual and locomotor circadian rhythms of scorpions.
(11) Three epitopes have been localized by immunoelectron microscopy on subunit Aa6 of the 4 x 6-meric hemocyanin of the scorpion Androctonus australis.
(12) Charybdotoxin isolated from the Israeli scorpion venom (Leiurus quinquestriatus hebraeus), also displaced [125I]-DpI binding, with a Ki of approximately 3 x 10(-9) M, although the displacement curve was shallower than with native DpI.
(13) We conclude that myocardial toxicity is a common and serious complication of scorpion stings in children.
(14) The claim made by astrologers that people can be characterized according to their sign of the zodiac (sagitarius, taurus, cancer, scorpion) must be refuted.
(15) We note the absence both of microtubules in the sperm of Centruroides and also of the centriole adjunct, which is present in other scorpion spermatids.
(16) The complete amino acid sequence of toxin XI of the North African scorpion Buthus occitanus tunetanus has been elucidated by automatic sequencing of the reduced and alkylated toxin and of the peptides obtained after tryptic cleavage restricted to arginyl bonds.
(17) 22Na+ uptake through voltage-dependent Na+ channels is induced by veratridine and scorpion venom, and is inhibited 50% by 5 X 10(-7) M-tetrodotoxin and greater than 98% by 5 X 10(-6) M-tetrodotoxin.
(18) A seven-year-old girl, stung by a scorpion, was hospitalized in a confused state with signs of myocarditis and pulmonary edema.
(19) The observation that two classes of neuronal depolarizing agents (veratrine and scorpion venom) cause TTX-sensitive inhibition of basal ion transport establishes that NaCl absorption in flounder intestine is subject to regulation by enteric nerves located in the submucosa.
(20) The effects of the major neurotoxic fraction isolated from scorpion venom of Tityus serrulatus, TiTx gamma, on peripheral nerve membrane of Xenopus laevis were studied under current- and voltage-clamp conditions.