In this task, you are given a sentence. You are expected to write the name of the organism substances in the body mentioned in the input. Although there might be several correct answers, you need to write one of them.

 Lower peak blood ethanol concentrations after 1 and 2 g of ethanol per kg were found in pregnant rats than in virgin females .
blood

 In the last several years Listerine has emerged as a bona fide therapeutic agent for reduction of plaque induced oral diseases .
plaque

 QTcF interval versus plasma linezolid concentrations .

plasma