Centrifuge for 10min at full speed in a tabletop microcentrifuge . the whitish pellet contains proteins and the bacterial genomic dna 用桌上型微量离心机以最高速离心10分钟。白色沈淀物含有蛋白质与细菌基因组dna 。
2.
Pipette 30 l of saline solution into the lid of the microcentrifuge tube ( or a microtiter plate ) . this will serve as a mixing platform for the sperm packets 用吸液管取30微升的盐溶液到微型离心管的盖子上面（或者一个。 。 。 ） 。这是为了给精液包提供一个微型混合平台。
