pcr准确率高吗简介：In the next few days, Qin Fen was receiving mutant fruit seedlings. It was not until five days later that he canceled the task, and then it was only on the sixth day that he received all the fruit seedlings that had been mailed.
In the next few days, Qin Fen was receiving mutant fruit seedlings. It was not until five days later that he canceled the task, and then it was only on the sixth day that he received all the fruit seedlings that had been mailed.
