Abstract:
Immunological reagents capable of direct agglutination with antigens are prepared by pre-polymerizing the antibody to form an aggregate and then coupling this aggregate to a microbial cell carrier particle with a chemical coupling agent. The prepolymerization of the antibody can be accomplished by the use of the same or another coupling agent. The use of the microbial cell carrier particle allows the reagents formed to be used as immunological indicator particles in slide tests which permit a quick read-out of test results. The reagent formed may be prepared and shipped in dry form and then reconstituted with liquid for use.
Abstract:
The disclosed derivatives of 1,3-disubstituted 2,4 (1H,3H)quinazolinediones produce vasodilation in experimental animals. The 1,3-disubstitutions include, among others, 1(alky(alkylamino))-, 1-(alkylpiperidyl)-, 3-(alkyl(alkylamino))-, 3-(alkyl(4-phenyl-1-piperidyl)-, and 3-(alkyl(4-phenyl-1piperazinyl))-moieties. In the latter two substituents the phenyl group optionally is substituted with halogeno or loweralkyl groups. Additionally, the compounds optionally are substituted at carbon atoms 5 through 8 of the quinazolinedione nucleus with halogeno, nitro, alkoxy, and alkylamido substituents.
Abstract:
A solid state electrode for use in determining ion concentration in an aqueous solution. The electrode comprises an electrically conductive inner element with a salt disposed on a surface portion thereof having as a cation a cation form of the element and also having an anion, a hydrophilic layer in intimate contact with the salt and including a water soluble salt of said anion and a hydrophobic layer in intimate contact with the hydrophilic layer whereby the hydrophilic layer is shielded from contact with the ion-containing aqueous solution. This electrode may function as a reference electrode as well as an electrode for identifying specific ions.
Abstract:
Certain substituted Beta -arylamidoacrylic acids and a method of preparing them are disclosed. These compounds are useful as antiinflammatory and diuretic agents.
Abstract:
THE INVENTION RELATES TO THE USE OF PROSTAGLANDIN A1 AS A BRONCHODILATING AGENT; THE PROSTAGLANDIN CAN BE USED IN PARTICULAR IN ALLEVIATING THE SYMPTOMS OF STATUS ASTHMATICUS BY INJECTION.
IN WICH R1 IS H OR PHENYL, R2 IS H OR ALKYL, R4 IS H PHENYL OR SUBSTITUTED PHENYL IN WHICH THE SUBSTITUENTS ARE HALOGEN, ALKOXY, OR ALKYL, R5 IS
4-(R3-PHENYL)PIPERAZINO OR 4-(R3-PHENYL)PIPERIDINO,
R3 IS H, HALOGEN, ALKOXY OR CF3, AND X IS A POLYCARBON LOWER ALKYLENE RADICAL OF BETWEEN 0 AND 2 CARBON ATOMS INCLUSIVE, COMPRISING THE FOLLOWING REACTION SEQUENCE:
Abstract:
TEST ARTICLE FOR USE IN CULTURING, DETECTING AND ANALYZING MICROORGAISM COMPRISING AN ABSORBENT WEB AND A SUBSTANTIALLY DRY, STABLE, CONTINUOUS LAYER OF A GEL SUCH AS AGAR OR GELATIN JOINED IN LAMINAR RELATIONSHIP THEREWITH BY A CONTINUOUS INTERFACE INTERGAL WITH SAID WEB AND GEL LAYER AND COMPRISING A COMPOSITE OF THE WEB AND GEL LAYER SAID DEVICE MAY BE ADDITIONALLY COMPRISED OF ONE OR MORE SUBSTANTIALLY DRY, STABLE, CNTINUOUS OVERLAYERS OF A GEL POSITIONED IN LAMINAR RELATIONSHIP WITH THE INITIAL GEL LAYER. SUCH GEL OVERLAYER IS PREFERABLY INCORPORATED WITH A REAGENT WHICH INCLUDES MICROBIOLOGICAL NUTRIENT MEDIA, BACKGROUND DYES AND COLOR INDICATORS.
Abstract:
Test device for detecting low concentrations of substances in test fluids comprising an absorbent wick having a substantially flat surface portion enclosed in a fluid impervious sheath having an aperture of predetermined limited area formed therein, the aperture being contiguous to and exposing a predetermined limited area of the flat surface portion of the wick, which portion is incorporated with a reagent specifically reactable with the substance being detected. In use the device is immersed into the test fluid so that the aperture is submerged and the device, allowed to remain therein while the test fluid contacts the reagent area adjacent to the aperture and migrates into the remainder of the wick. The reagent is immobilized with respect to the liquid. The sheath adjacent to the wick is opaque.