"the bacterial pellet."
In this experiment, the DNA from enterobacteria phage T2 was labeled with 32p in order to know what entered the bacteria the most, whether protein from the phage (that was also labeled with another radioactive substance) or the DNA from the phage. What was found in the bacterial pellet was mostly 32p-labeled DNA. This experiement pretend to show that the DNA was truly where the genetic material is.