NS should be a lot easier than ES and cheaper too...but for biochemistry, it is still too expensive...on top of that, the consistency is a bit problem too as the culture is changing fast... BTW, by 好养倒是真的。当然贴壁后就容易分化...can you elaborate a bit more on this? do you use low adherence plate or bacteria dish? what age? Can you slow it down with growth factors/culture conditions? and how bad the differentiation could be when 贴壁...I haven't examine this part very carefully myself but would love to know...