Abstract: The present invention addresses the problem of providing an agent for improving sperm-motility, in particular, an agent for improving forward-sperm-motility, for use on reduced-motility sperm in male infertility treatment. Prepared is a gaseous agent for improving sperm-motility consisting of a gas that contains hydrogen molecules in the amount of 1% (v/v) or higher, for example, a gas that contains hydrogen molecules in an amount of between 45 and 55% (v/v), or a liquid agent for improving sperm-motility consisting of a liquid such as physiological saline, a culture solution, or a buffer solution containing hydrogen molecules in the amount of 1% or higher of the saturation solubility thereof, for example, a liquid in which hydrogen molecules have been dissolved by bubbling.

Abstract: The present invention addresses the problem of providing an agent for improving sperm-motility, in particular, an agent for improving forward-sperm-motility, for use on reduced-motility sperm in male infertility treatment. Prepared is a gaseous agent for improving sperm-motility consisting of a gas that contains hydrogen molecules in the amount of 1% (v/v) or higher, for example, a gas that contains hydrogen molecules in an amount of between 45 and 55% (v/v), or a liquid agent for improving sperm-motility consisting of a liquid such as physiological saline, a culture solution, or a buffer solution containing hydrogen molecules in the amount of 1% or higher of the saturation solubility thereof, for example, a liquid in which hydrogen molecules have been dissolved by bubbling. The gaseous agent for improving sperm-motility can improve the motility of sperm by contacting hydrogen gas and either semen or a dilution thereof with each other in a gaseous phase.

Abstract: An object of the present invention is to provide a scavenger of in vivo harmful reactive oxygen species and/or free radicals, which is capable of effectively reducing the concentrations of in vivo reactive oxygen species and/or free radicals and exhibiting given effects such as the suppression of aging process, the prevention of geriatric or lifestyle-related disease, health promotion, and the inhibition of oxidative stress by virtue of this reduction in the concentrations of reactive oxygen species and/or free radicals. The scavenger of in vivo harmful reactive oxygen species and/or free radicals of the present invention comprises a liquid or gas comprising at least a hydrogen molecule. This medium may further comprise an oxygen molecule. Furthermore, this medium may comprise water or an aqueous solution or may be a gas. The scavenger of reactive oxygen species and/or free radicals can be used in the treatment or prevention of a disorder attributed to reactive oxygen species and/or free radicals.

Abstract: An object of the present invention is to provide a scavenger of in vivo harmful reactive oxygen species and/or free radicals, which is capable of effectively reducing the concentrations of in vivo reactive oxygen species and/or free radicals and exhibiting given effects such as the suppression of aging process, the prevention of geriatric or lifestyle-related disease, health promotion, and the inhibition of oxidative stress by virtue of this reduction in the concentrations of reactive oxygen species and/or free radicals. The scavenger of in vivo harmful reactive oxygen species and/or free radicals of the present invention comprises a liquid or gas comprising at least a hydrogen molecule. This medium may further comprise an oxygen molecule. Furthermore, this medium may comprise water or an aqueous solution or may be a gas. The scavenger of reactive oxygen species and/or free radicals can be used in the treatment or prevention of a disorder attributed to reactive oxygen species and/or free radicals.

Abstract: According to the present invention, a lipid metabolism improving agent containing hydrogen molecules that is in a liquid or gas state is provided. The lipid metabolism improving agent of the present invention comprises a liquid or gas containing at least hydrogen molecules. It may comprise a medium containing oxygen molecules. Further, such medium may comprise water, an aqueous solution, or a gas. The lipid metabolism improving agent has effects of suppressing body fat accumulation, arteriosclerosis, and the like.

Abstract: An object of the present invention is to provide a scavenger of in vivo harmful reactive oxygen species and/or free radicals, which is capable of effectively reducing the concentrations of in vivo reactive oxygen species and/or free radicals and exhibiting given effects such as the suppression of aging process, the prevention of geriatric or lifestyle-related disease, health promotion, and the inhibition of oxidative stress by virtue of this reduction in the concentrations of reactive oxygen species and/or free radicals. The scavenger of in vivo harmful reactive oxygen species and/or free radicals of the present invention comprises a liquid or gas comprising at least a hydrogen molecule. This medium may further comprise an oxygen molecule. Furthermore, this medium may comprise water or an aqueous solution or may be a gas. The scavenger of reactive oxygen species and/or free radicals can be used in the treatment or prevention of a disorder attributed to reactive oxygen species and/or free radicals.

Abstract: A polypeptide exhibiting the antigenicity of Mycoplasma gallisepticum, a fused polypeptide comprising the above polypeptide and, connected to the N-terminus thereof, a signal membrane anchor of a type II outer-membrane polypeptide of a virus that infects birds, or a polypeptide capable of reacting with a mycoplasma-immune serum or a mycoplasma-infected serum and exhibiting a substantially pure antigenecity, respectively having amino acid sequences of about 32 kDa, about 40 kDa, or about 70 kDa. The expression with a recombinant virus of a polypeptide modified to such an extent as to exhibit an antigenicity equivalent to that of any of the above polypeptides. The use of a recombinant virus as a live vaccine.