(v. t.) To untwist; to separate, as that which is twined or twisted; to disentangle; to untie.
(v. i.) To become untwined.
Example Sentences:
(1) Chromosomes partly untwine but remain attached at their kinetochores.
Untwist
Definition:
(v. t.) To separate and open, as twisted threads; to turn back, as that which is twisted; to untwine.
(v. t.) To untie; to open; to disentangle.
Example Sentences:
(1) The DNA untwisting enzyme has been purified approximately 300-fold from rat liver nuclei.
(2) Prompt diagnosis, in which timely diagnostic laparoscopy and ultrasound evaluation of the pelvis may be helpful, provides the opportunity for prompt laparotomy with untwisting of the torsion and stabilization of the adnexa by suture and cystectomy, if possible, extirpation if not.
(3) In group I (torsion maintained), unilateral torsion of the spermatic cord was maintained until the day of sacrifice; in group II (torsion and untwist), torsion of the spermatic cord was maintained for 8 to 12 hours, then the spermatic cord was untwisted and the testis was retained until the day of sacrifice.
(4) With resolution of rejection, M(early-dia) and percent untwist during early diastole returned to baseline levels (p = NS versus baseline).
(5) From the intersection points, epicardial and endocardial circumferential chord and arc lengths were measured and angular twist of mid and apical levels with respect to the base (maximal torsion and its reversal, untwisting) was calculated.
(6) Histone cores partly dissociate within the temperature range of 25 to 40 degrees C. Quantitative analysis of histone thermal dissociation from DNA shows that the size of DNA protected against thermal untwisting would be significantly overestimated if this effect is neglected.
(7) Footprinting experiments demonstrated that EBNA-1 binds to oriP in a sequence-specific manner and bends or untwists the DNA at two symmetry-related sites in region II.
(8) It is important that the thoracic kyphosis be recreated, firstly so that the spine can be untwisted, and secondly to bring the thoracic spine once again behind its axis of rotation thus preventing postoperative buckling with the remainder of growth.
(9) If a mixture of complementary single-stranded rings is annealed and then treated with the DNA untwisting enzyme, the DNA circles completely renature as judged by (i) the presence of interlocked rings that sediment at 53 S in alkali, (ii) the buoyant density of the renatured DNA in CsCl gradients containing ethidium bromide, and (iii) the resistance of the product to the single-strand-specific S1 nuclease.
(10) The later was used for establishing the diagnosis and furthermore for untwisting the adnexa.
(11) This purified fraction shows a DNA topoisomerase activity that untwists superhelical DNA in an ATP- and Mg2+-dependent reaction.
(12) However, if prompt diagnosis is made and viable tissue found (laparoscopy may be helpful), the opportunity of untwisting the adnexa and salvaging of ovarian function and fertility should be taken.
(13) When a simple volvulus is found, the loop should be untwisted and the gaseous contents siphoned off by menas of a rectal catheter.
(14) It is shown in this case that untwisting is negligible and bending significant.
(15) A DNA molecule containing a single strand break was shown to be an intermediate in the untwisting reaction.
(16) The DNA untwisting enzyme relaxes covalently closed circylar DNAs by the sequential breaking (nicking) and closure of one strand of the duplex.
(17) Both mathematic computation of velocity distribution in the impeller and geometric illustration of the velocity triangle at the top of the vane have demonstrated that the peripheral velocity variation of blood cells in a twisted impeller will be less than that in an untwisted impeller.
(18) These results show that the DNA in the SV40 chromatin which is accessible to the DNA untwisting enzyme is under no topological strain.
(19) They had all undergone surgical untwisting with replacement of the nonviable testis in the scrotum during prepubertal period.
(20) The assembly of this dodecamer initiates an untwisting of the duplex by 2-3 turns.