Abstract: The problem that differences among lots in components and amounts of growth factors and the like in platelet-rich plasmas derived from an autologous plasma and the freeze-dried preparations thereof are large, and the effects of the lots are not kept constant is solved. Specifically, a freeze-dried preparation comprising megakaryocytes and platelets induced to differentiate from stem cells, a pharmaceutical composition comprising the freeze-dried preparation, and the like are provided.

Abstract: The purpose of the present invention is to provide a medicament which is useful for prevention or treatment of muscle injury. The present invention relates to a novel medical use of an extract from inflamed tissues inoculated with vaccinia virus, and more particularly, it relates to a preventing or therapeutic agent for muscle injury containing the extract as an active ingredient. The preventing or therapeutic agent for muscle injury of the present invention containing the extract as an active ingredient is extremely useful as a highly effective and highly safe medicament.

Abstract: A medicament is useful for prevention or treatment of muscle injury. A novel medical use of an extract from inflamed tissues inoculated with vaccinia virus, and more particularly, a preventing or therapeutic agent for muscle injury containing the extract as an active ingredient. The preventing or therapeutic agent for muscle injury contains the extract as an active ingredient is extremely useful as a highly effective and highly safe medicament.