Weighing Shaped 方形称量盘

Denaturing Discontinuous Polyacrylamide Gel Electrophoresis (SDS-PAGE)

, and the flanged edge of the T-shaped spacer positioned against the outside edges of the glass plate. Place a piece of wax paper between each sandwich to facilitate separation after polymerization (optional).   Fit the gel sandwiches (usually

SSR GEL and Silver Staining Protocol

gloves when handling solution and face mask when weighing out powder. A safer alternative is to buy a premix. 1. Rinse all glassware and plastic ware with d.i. water prior to gel solution preparation and pouring, including the disposable filter unit

实验1 显微镜

。 　　在镜臂基部有一个方形或圆形的平台，是载物台（或称镜台）。台的中央有一圆孔，可通过光线。两侧有压片夹，用以固定玻片标本。现代的显微镜具镜台X－Y驱动器，用以固定和移动玻片标本。在圆孔的下面，有由一片或数片透镜所组成的聚光器，有集射光线于物体的作用。聚光器附有一组由金属片组成的可变光阑，其侧面伸出一杠杆，可前后移动使光阑开闭。光阑开大则光线较强，适于观察色深的物体；光阑缩小则光线较弱，适于观察透明（或无色）的物体。 　　在聚光器下方有反光镜，可将光线反射至聚光器。此镜一面平，一面