PROBLEM TO BE SOLVED: To provide a kit for separating and concentrating body fluid cells including stem cells. A kit includes a first cap connection housing 110b, a first housing 120, a central housing 130, a second housing 140, and a second cap connection housing 150b. The boundary layer between the blood cell component C and the plasma component P is formed in the second connecting hole 145 by rotating the second cap connection housing relative to the second housing in the forward direction or the reverse direction and screwing the same by a certain amount. The position of the second cap connection housing is manually and delicately adjusted with respect to the second housing so as to be located at the center or the lower end. When the second connecting hole 145 is closed by the second locking bar 162 by rotating the second housing relative to the central housing in the normal direction or the reverse direction, the second housing and the second cap connecting housing are separated from each other. Only the blood cell component, which is the separation target, remains in the second space S2 formed in. [Selection diagram] Fig. 7c【課題】幹細胞を含む体液細胞を分離して濃縮するキットを提供する。【解決手段】キットは第１キャップ連結ハウジング１１０ｂ、第１ハウジング１２０、中央ハウジング１３０、第２ハウジング１４０及び第２キャップ連結ハウジング１５０ｂから構成される。前記第２ハウジングに対して前記第２キャップ連結ハウジングを正方向または逆方向に相対回転させて一定量ねじ移動させることによって、血球成分Ｃと血漿成分Ｐ間の境界層が第２連結孔１４５の中央や下端に位置するように前記第２ハウジングに対して第２キャップ連結ハウジングの位置を手作業で繊細に調節する。前記中央ハウジングに対して第２ハウジングを正方向または逆方向に相対回転させて前記第２連結孔１４５が第２ロッキングバー１６２によって密閉されると、前記第２ハウジングと前記第２キャップ連結ハウジング間に形成された第２空間Ｓ２に分離対象物である血球成分のみが残留する。【選択図】図７ｃ
