Abstract: A silver halide photographic light-sensitive material is disclosed, which comprises a support and provided thereon, a silver halide emulsion layer containing a crown ether having a 18-membered ring condensed with at least one aromatic ring and silver halide grains having a (100) face and satisfying the following inequality:15.ltoreq.Kwherein K is defined to be (intensity of a diffraction line attributed to a (200) face)/(intensity of a diffraction line attributed to a (222) face).

Abstract: A silver halide photographic light-sensitive material comprises a support and provided thereon, a silver halide emulsion layer containing silver halide grains and a macrocyclic compound in an amount of 1.times.10.sup.-6 to 1.times.10.sup.-1 mol per mol of silver, said macrocyclic compound comprising a 9- or more-membered ring containing at least one of a nitrogen atom, an oxygen atom, a sulfur atom and a selenium atom, and said silver halide grains having a silver chloride content of not less than 90 mol % and containing at least one metal selected from the group consisting of metals of VIB group, VIIB group, VIII group, IIB group, IIIA group and IVA group from the Periodic Table.

Abstract: A silver halide emulsion comprises silver halide grains having a silver chloride content of not less than 10 mol % and a silver bromide content of not less than 0.1 mol % the silver halide grains being formed in the presence of at least one of compounds represented by the following Formula I:Formula IY.sub.n1 MBr.sub.n2 X.sub.n3wherein M represents an ion selected from the group consisting of rhenium, ruthenium, osmium, platinum, palladium, and iridium ion; Y represents a cation; X represents a ligand coordinating M; n.sub.1 represents an integer of 0 to 3; and n.sub.2 and n.sub.3 each represent an integer, provided that n.sub.2 .gtoreq.n.sub.3 and n.sub.2 +n.sub.3 =4 or 6.

Abstract: A photosensitive silver halide photographic material having a support and, provided thereon, the photographic component layers including at least one silver halide emulsion layer containing silver halide grains (1) having at least two kinds of halogens, is disclosed. The silver halide grains (1) are grown to in a system in the presence of silver halide grains (2) coexisting:with silver halide grains which are growing to the silver halide grains (1),for at least some portion of period that said silver halide grains are growing in the system,and comprising solubility product less than that of said growing silver halide grains.

Abstract: A recombinant natural killer cell activating factor is disclosed, preferably having a peptide of the following amino acid sequence in its molecule. The invention provides a cDNA coding for a recombinant natural killer cell activating factor, a expression plasmid involving the cDNA, a host transformed with the plasmid, an antitumor agent containing the recombinant natural killer cell activating factor and a pharmaceutical composition which comprises a pharmacologically effective amount of the antitumor agent and a pharmacologically acceptable carrier.

Abstract: A reflective silver halide photographic light-sensitive material is disclosed. The light-sensitive material comprises a reflective support having thereon a silver halide emulsion layer wherein the support have an oxygen permeability of not more than 2.0 ml/m.sup.2 .multidot.hr.multidot.atm and the silver halide emulsion layer contains a magenta coupler represented by the following Formula I; ##STR1## wherein Ar is an aryl group; Y is a hydrogen atom or a substituent capable of splitting off upon reaction with the oxidation product of a color developing agent; X is a halogen atom, an alkoxy group or an alkyl group; R is a strait- or branched-chain alkyl group having 1 to 20 carbon atoms; J is a strait- or branched-chain alkylene group; and n is an integer of from 0 to 4, when n is 2 or more, the plurality of Xs may be the same or different. The light-sensitive material is excellent in red color reproducibility and light fastness of red colored images.

Abstract: A silver halide color light-sensitive material is disclosed. The light-sensitive material comprises a support and a silver halide emulsion layer provided on the support. The emulsion layer comprises silver halide grains which have been formed in the presence of a complex of rhenium, molybdenum, iridium, rhodium, ruthenium, osmium, cadmium, zinc, palladium, platinum, gold, iron, nickel, cobalt, tungsten, or chromium each having at least one cyanate ligand, isocyanate ligand or fluminate ligand. The light-sensitive material is high in speed, low in fog and excellent in reciprocity low failure characteristics.

Abstract: Disclosed is a light-sensitive silver halide photographic material having at least one silver halide emulsion layer on a support, wherein (1) the silver halide emulsion is spectrally sensitized by a red-sensitive sensitizing dye and contains a macrocyclic compound having at least one hetero atom, (2) a number of aliphatic rings forming the macrocyclic compound is 4 or less, and (3) the macrocyclic compound has an aromatic ring, which has good aging storage stability and excellent safelight safety characteristics, and can provide high sensitivity stably.

Abstract: A recombinant natural killer cell activating factor is disclosed, preferably having a peptide of the following amino acid sequence in its molecule. The invention provides a cDNA coding for a recombinant natural killer cell activating factor, a expression plasmid involving the cDNA, a host transformed with the plasmid, an antitumor agent containing the recombinant natural killer cell activating factor and a pharmaceutical composition which comprises a pharmacologically effective amount of the antitumor agent and a pharmacologically acceptable carrier.

Abstract: Silver halide grains for use in silver halide photography having a regular crystal shape and including at most two irregularly grown crystal faces and a silver halide photo-sensitive material containing these silver halide grains are disclosed.

Abstract: A silver halide color negative photographic light-sensitive material is disclosed which is improved on stability to fluctuation of processing conditions applied thereon, and has a sufficient wide exposure latitude. The photographic material is also improved on standing stability of silver halide emulsion in the course of manufacturing thereof. The photographic material comprises a support having thereon photographic component layers including at least one silver halide emulsion layer containing at least two groups of silver halide grains each being substantially different in desensitizing agent content from each other.

Abstract: A light-sensitive silver halide photographic material suitably applicable to rapid processing with well-restrained fogging, color fading and degradation in the contrast is disclosed. The material comprises a reflective support and, provided thereon, at least one light-sensitive silver halide emulsion layer which contains (1) silver chloride or silver chlorobromide emulsion of which silver chloride content is not less than 90 mole % and said silver chloride or silver chlorobromide emulsion has been prepared by the addition of a heterocyclic mercapto compound or an azaindene compound during the period of formation of silver halide grains contained therein, (2) a dye-forming coupler and (3) a high-boiling organic solvent of which dielectric constant is not more than 6.

Abstract: A light-sensitive silver halide color photographic material having photographic constituent layers including a blue-sensitive silver halide emulsion layer, a green-sensitive silver halide emulsion layer and a red-sensitive silver halide emulsion layer on a support, wherein the content of silver bromide of the silver halides in the green-sensitive silver halide emulsion layer and red-sensitive silver halide emulsion layer is 5 to 65 mole %, and the green-sensitive silver halide emulsion layer contains at least one of the compounds represented by the formula shown below: ##STR1## wherein X represents a halogen atom or a monovalent organic group eliminable through coupling reaction with an oxidized product of a developing agent; R.sub.1 to R.sub.

Abstract: Disclosed are a silver halide grain comprising 8 or 12 concavities on the surface, and a photographical light-sensitive material containing a silver halide grain having 8 to 12 concavities on the surface.According to the present invention, there can be obtained silver halide grains having still higher sensitivity and also improved in the relationship of sensitivity-fog as compared with those of the prior art, and also a light-sensitive silver halide material by use of an emulsion containing said grains.

Abstract: Disclosed are silver halide grains which have crystal faces defined by Miller indices of (nnl) where n.gtoreq.

Abstract: A silver halide color photographic material is disclosed. Said material has formed on a base photographic layers including a blue-sensitive silver halide emulsion layer, a green-sensitive silver halide emulsion layer and a red-sensitive silver halide emulsion layer, wherein said blue-sensitive silver halide emulsion layer contains at least one highly reactive yellow coupler having a relative coupling reaction rate of 0.3 or more, said green-sensitive silver halide emulsion layer containing at least one compound of Formula (I): ##STR1## wherein X is a halogen atom or a monovalent organic group capable of leaving upon coupling reaction with the oxidized product of a developing agent; R.sub.1 to R.sub.

Abstract: New cephalosporin derivatives represented by the general formula: ##STR1## wherein R.sub.1, R.sub.2, and R.sub.3 each represents hydroxy, acyloxy, and hydrogen provided that two or three of R.sub.1, R.sub.2, and R.sub.3 are not hydrogen at the same time, and their salts, and processes for the preparation thereof. The cephalosporin derivatives of the present invention are useful as antibacterial drugs.

Abstract: Novel cephalosporin compounds of the general formula: ##STR1## wherein R.sub.1 represents a substituted or unsubstituted nitrogen-containing heterocyclic-thio group, R.sub.2 represents hydrogen or hydroxy, and R.sub.3, R.sub.4 and R.sub.5 each represents hydrogen, hydroxy or acyloxy, and their salts, and processes for the preparation thereof. The novel compounds and their salts have antibacterial activity.