(n.) A semisolid unctuous substance, neutral, and without taste or odor, derived from petroleum by distilling off the lighter portions and purifying the residue. It is a yellowish, fatlike mass, transparent in thin layers, and somewhat fluorescent. It is used as a bland protective dressing, and as a substitute for fatty materials in ointments.
Example Sentences:
(1) These phantoms are made of bone ash suspended in white petrolatum in varying concentrations.
(2) This effect is quite marked and cannot be due solely to psychological effects of the rub therapy, or to effects of petrolatum without aromatics.
(3) This caused immediately a significant decrease in the capacitance of the cream treated sites, whereas a tendency towards higher values were noted on the petrolatum-treated sites.
(4) A thick viscous base (hydrophilic petrolatum) was more effective than a hydrophilic cream base (hydrophilic ointment), presumably because of greater occlusivity.
(5) Approximately half the number of patients preferred dithranol in petrolatum or Amitase stick and the other half preferred Micanol.
(6) Fifty normal control volunteers were patch tested to 20% neomycin as well as tobramycin 1%, 10%, 20% and 30% in white petrolatum.
(7) The spherules are altered red blood cells that form as the result of prolonged contact with necrotic fat or petrolatum-based ointments.
(8) The moisturizers were pure petrolatum and three oil-in-water creams.
(9) The effects of temperature and mechanical shear on the microcrystalline structure of petrolatum are examined; syneresis determinations and rheological methods are utilized as indicators of the integrity of this structure.
(10) The purpose of the present study was to evaluate compatibility between aluminium Finn Chambers and various mercurials either dissolved in water or dispersed in petrolatum (at the concentrations used in patch test clinics).
(11) New alcohol derivatives of N,N-disubstituted amino acids with a low toxicity have been synthesized and evaluated for their transdermal penetration enhancing effects on the transport of indomethacin from petrolatum ointments across shed skin of black rat snake (Elaphe obsoleta).
(12) However, a dressing of a tetracycline-steroid ointment in a petrolatum base and a hemostatic agent was placed in the tooth socket during surgery and the dressing may have allowed air into the deeper tissues.
(13) The other arm was similarly treated with the ointment base (white petrolatum USP) to provide the control area.
(14) Single doses of 14C-viprostol were administered topically to rats in three formulations: silicone oil, petrolatum base, and triethyl citrate (TEC).
(15) Bedridden individuals should use petrolatum, whereas the ambulatory would be better served by the use of lotions and creams.
(16) The ocular levels of tetracycline were increased by the vehicle in this ascending order: isotonic saline, 1.4% polyvinyl alcohol, 1% alpha-methylcellulose, and a 6:4 mixture of white petrolatum-mineral oil ointment.
(17) Patch-tests (20 p. 100 in petrolatum) were used in order to show this cross-sensitivity.
(18) The permeation of cortisone and benzoic acid applied in a petrolatum vehicle was determined in vivo in rats and with rat skin in the flow-through and static-diffusion cells.
(19) Qualitative and semiquantitative analysis using high-pressure liquid chromatography (HPLC) showed that dithranol (0.1%, 0.5%, 1.0%) remained rather stable in white petrolatum for 10 weeks, regardless of the presence or absence of salicylic acid.
(20) In the office or hospital, the usual measures are firm pressure, placement of a piece of cotton dipped in a cocaine-epinephrine solution, taking of a brief history, application of petrolatum, and taping of the nose.
Vaseline
Definition:
(n.) A yellowish translucent substance, almost odorless and tasteless, obtained as a residue in the purification of crude petroleum, and consisting essentially of a mixture of several of the higher members of the paraffin series. It is used as an unguent, and for various purposes in the arts. See the Note under Petrolatum.
Example Sentences:
(1) The myoplasmic Ca2+ transient in response to action potential stimulation was monitored in cut fibres containing Antipyrylazo III under current clamp in a double Vaseline-gap chamber.
(2) The optimal methods were the following: storage of Micromonospora on agarized media under a layer of vaseline oil, storage of Micromonospora in the form of a mature submerged culture on liquid media optimal for its growth and development.
(3) Here, frog single muscle fibers were voltage clamped using the vaseline-gap voltage-clamp technique to study the effect of external [K+] on the voltage-dependent block of inward K+ currents through the inward rectifier by external Cs+.
(4) Intramembranous charge movement was measured in cut twitch fibers mounted in a double Vaseline-gap chamber with either a tetraethylammonium chloride (TEA.Cl) or a TEA2.SO4 solution (13-14 degrees C) in the central pool.
(5) Three manifestations of excitation-contraction (E-C) coupling were measured in cut skeletal muscle fibers of the frog, voltage clamped in a double Vaseline gap: intramembrane charge movements, myoplasmic Ca2+ transients, and changes in optical transparency.
(6) Slides covered with vaseline were exposed to the air for 24 h every day during the above-mentioned period.
(7) Single frog skeletal muscle fibres bathed in a relaxing solution were cut close to the tendon and mounted across a single Vaseline gap so that a short segment of intact terminated fibre extended beyond one side of the gap.
(8) A simple method, which does not require microelectrodes, allowed continual estimation of a fiber's membrane (rm) and internal longitudinal (ri) resistances as well as the external resistance (re) under the Vaseline seals.
(9) We investigated inactivation of the slow calcium current (ICa) at very positive potentials (over 30-40 mV) and recovery from inactivation in cut twitch skeletal muscle fibres of the frog, using the double-vaseline-gap technique.
(10) inoculated intraperitoneally in a dose of 1 X 10(7) cells into mice previously treated with vaseline oil or pristane, produced tumors in 100% of the animals.
(11) Anything, really, to trowel vaseline over the lens for a soft ESPN Sunday NFL Countdown segment.
(12) In the case presented, the patient was ingesting Vaseline Intensive Care Lotion and baby oil as laxatives.
(13) Destructive activity of isolated strain was retained after 5-year storage in lyophylized state and under vaseline oil.
(14) Consenting adults were prospectively randomized to one of the following: Vaseline gauze nasal packing or 30 Dexon mucosal suture.
(15) Postoperative treatment with a vaselinated iodoform gauze lasted between 3 and 5 weeks.
(16) Charge movement was measured in frog cut twitch fibers with the double Vaseline gap technique.
(17) Packing retrorectal space by Spongel instead of the vaseline gauze, the post-operative care is simplified and the delay of hospitalisation really shortened.
(18) Thirty-five patients with lichen sclerosus were given local 2% testosterone propionate in vaseline twice a day for 8 weeks, once a day for another 8 weeks and then 3 times a week for another 8 weeks.
(19) Thus, the following aspects are examined: (a) morphological characteristics of the myelinated nerve fiber and problems arising from the membrane currents measurements: (b) problems induced by use of the insulating layers on the myelin surface: air gap or vaseline seal insulation; (c) effect of the nodal gap resistance on the ionic currents measurements in the node of Ranvier membrane.
(20) Intramembrane charge movement was measured on skeletal muscle fibers of the frog in a single Vaseline-gap voltage clamp.