happy--active
Tuesday, April 10, 2007
Friday, April 06, 2007
diagram 2
There are 17 students share their “body fluid”. Obviously, 11 students who doesn’t have disease agents in their tube in original. We follow the track and could make a conclusion as table 2 show:
diagram
This diagram show only Nathaly, Sadia and Ana are negative. The rest students are not Original people spread to other people.They should be all negative in original.