The cell which covers around gel formation and the particular gel formation which form the core field (the cover cell) with being production manner of the bio material which is included, process below: (A) Making with the oil or the vegetable oil or these oils and the mixed oil of the mineral oil and includes the gel formation component the solution contact which possess living body compatibility, the process which generates the single dispersion liquid drop, (B) The aforementioned single dispersion liquid drop gelling, the process which obtains the gel ball, and (C) The process which seeds the aforementioned cover cell on the surface of the aforementioned gel ballThe aforementioned manner which is included.コア領域を形成するゲル層と、当該ゲル層の周囲を覆う細胞(カバー細胞)とを含むバイオマテリアルの製造方法であって、以下の工程:(a)生体適合性を有する油若しくは植物油、又はこれらの油と鉱油との混合油と、ゲル形成成分を含む溶液とを接触させて単分散液滴を生成する工程、(b)前記単分散液滴をゲル化してゲル玉を得る工程、並びに(c)前記ゲル玉の表面に前記カバー細胞を播種する工程を含む前記方法。
