(n.) A dark, obscure, or inexplicable saying; a riddle; a statement, the hidden meaning of which is to be discovered or guessed.
(n.) An action, mode of action, or thing, which cannot be satisfactorily explained; a puzzle; as, his conduct is an enigma.
Example Sentences:
(1) The nature of the putative autoantigen in Graves' ophthalmopathy (Go) remains an enigma but the sequence similarity between thyroglobulin (Tg) and acetylcholinesterase (ACHE) provides a rationale for epitopes which are common to the thyroid gland and the eye orbit.
(2) The role of growth hormone (GH) and the related placental lactogens in implantation and subsequent embryonic and fetal development is an enigma.
(3) The exact association between psoriasis and arthritis remains an enigma.
(4) And then there is the great enigma of that involuntary separation inflicted by the death of those without whom we would never have wanted to live.
(5) An apparent enigma during platelet aggregation is that increased glycogenolysis occurs despite a fall in cyclic AMP levels; Activation by a classical cascade is therefore unlikely, and an alternative stimulus for phosphorylase a formation was sought.
(6) This triad is currently an enigma in the field of internal medicine.
(7) Rectal carcinoma remains an enigma to surgical and medical oncologists.
(8) Most of the known central actions of angiotensin II, for example the regulation of blood pressure and of electrolyte and water balance, seem to be mediated by the AT1 receptor, while the role of the AT2 receptor is still an enigma.
(9) What they say "You are an enigma wrapped in a riddle nestled in a sesame seed bun of mystery" – Stephen Colbert
(10) We believe that the "missing pathway" for factor XI activation remains an enigma that warrants further investigation.
(11) He, of course, disclaimed his commitment, telling an American admirer that he was "a person who prefers life to art, and who knows it is a far finer thing to be in love…" The record of his creativity suggests the opposite, only adding to the aura of enigma that still surrounds him.
(12) Against this background the present study was performed, and it has been shown that the resolution to the enigma is that there are two different populations of bipolar cells in the rat visual cortex.
(13) The biologic background to the clinical behavior of these metastasizing tumors remains an enigma.
(14) The author argues that the similarity of the Bushman trance state, kia and that of drug-induced altered states of consciousness has been paid too little attention in the research, and that an enigma currently exists with regard to the degree to which plant drugs may have influenced the !Kung trance phenomenon and healing beliefs.
(15) In many ways the problem of diaphragmatic hernia is as much of an enigma to today's physician-scientist as it was to Bochdalek in the nineteenth century.
(16) The treatment of keloids continues to be an enigma to the surgeon and the patient as well.
(17) And we need to declare war on them.” The rhetoric injected renewed urgency into the effort to unlock the enigma of a couple who had lived quietly and privately with their six-month-old daughter.
(18) Facial palsy is a distressing nonfatal disorder that creates an emotional crisis for the patient and often a therapeutic enigma for the physician.
(19) The function of the third one called the tissue type is still an enigma.
(20) A variety of pharmacologic manipulations were employed to help solve this enigma.
(a.) Withdraw from general intercourse or notice; in retirement or secrecy; secluded.
(a.) Faithful to a secret; not inclined to divulge or betray confidence; secretive.
(a.) Separate; distinct.
(a.) Something studiously concealed; a thing kept from general knowledge; what is not revealed, or not to be revealed.
(a.) A thing not discovered; what is unknown or unexplained; a mystery.
(a.) The parts which modesty and propriety require to be concealed; the genital organs.
(v. t.) To keep secret.
Example Sentences:
(1) In the absence of atrial dilatation there was minimal stimulus for ANF secretion.
(2) We have previously shown that serotonin is present in secretory granules of frog adrenochromaffin cells; concurrently, we have demonstrated that serotonin is a potent stimulator of corticosterone and aldosterone secretion by adrenocortical cells.
(3) We have investigated a physiological role of endogenous insulin on exocrine pancreatic secretion stimulated by a liquid meal as well as exogenous secretin and cholecystokinin octapeptide (CCK-8) in conscious rats.
(4) To examine the central nervous system regulation of duodenal bicarbonate secretion, an animal model was developed that allowed cerebroventricular and intravenous injections as well as collection of duodenal perfusates in awake, freely moving rats.
(5) The present study was therefore carried out to specify further which type of adrenoceptor is involved in lithium-induced hyperglycaemia and inhibition of insulin secretion.
(6) Significant increases in acid secretion were observed without changes in cyclic nucleotides.
(7) In summary, GABAergic tone did not effect basal acid secretion in anesthetized rats.
(8) The effects of glucagon-induced insulin secretion upon this lipid regulation are discussed that may resolve conflicting reports in the literature are resolved.
(9) Since the advance and return of sperm inside the tubes could facilitate the interaction of sperm with secretions participating in its maturation, the persistent infertility after vasectomy could be related to the contractile alteration that follows the excessive tubal distention.
(10) This suggests that a physiological mechanism exists which can increase the barrier pressure to gastrooesophageal reflux during periods of active secretion of the stomach, as occurs in digestion.
(11) "They wanted to pass it almost like a secret negotiation," she said.
(12) The secretion of GH as measured by increased plasma level, in response to oral administration of 500 mg L-dopa or 30 min-infusion of arginine, was not modified by prior intravenous administration of 200 micrograms GH-releasing hormone (GHRH).
(13) Short incubations with heparin (5 min) caused a release of the enzyme into the media, while longer incubations caused a 2-8-fold increase in net lipoprotein lipase secretion which was maximal after 2-16 h depending on cell type, and persisted for 24 h. The effect of heparin was dose-dependent and specific (it was not duplicated by other glycosaminoglycans).
(14) This experimental system allows separation of three B lymphocyte developmental stages: early differentiation in vitro, progression to IgM secretion in vivo, and late differentiation dependent upon mature T lymphocytes in vivo.
(15) These results provide evidence that trait selection can change gonadotrophin receptor concentration and the dynamics of hormone secretion during the oestrous cycle of the mouse.
(16) Caries-related bacteriological and biochemical factors were studied in 12 persons with low and 11 persons with normal salivary-secretion rates before and after a four-week period of frequent mouthrinses with 10% sorbitol solution (adaptation period).
(17) The sites of action for somatostatin and epinephrine to inhibit insulin secretion have been reported to be exclusively in the exocytotic pathway.
(18) Since intracellular Ca2+ seems to play a role in stimulus-secretion coupling and ion movements, several aspects of Ca2+ homeostasis have been investigated in CF.
(19) The Metoclopramide-induced secretion of prolactin and aldosterone was blunted in 6 patients pretreated with 200 mg ibopamine.
(20) On the basis of obtained data on the uniformity of chemical compounds of the secretion of glands belonging to different groups their common origin has been suggested.