The dilutedblood sample can be moved back and forth through the reaction Chambers until blood clots.
稀释后的血样可以通过反应室前后移动，直到血液凝结。
2
That seemed clear enough, but things got tricky when the nonwhite ancestor was a grandparent or a great-grandparent and the minority blood became increasingly diluted.
这看来够清楚了吧，但当非白人祖先是祖辈或曾祖辈，少数种族血统越来越稀释时，情况又变得微妙起来。
3
Our assumption is that these men have more blood volume, so PSA gets diluted, he said.