Please read the whole thing before answering. This does not need any data. I just need help finding out if this is ANCOVA, Nested Design, Random Effects, Fixed Effects, and Mixed Effects and DFs. It will be great if you can explain me why you used it. Thank you.

Que. There is a study looking at the uptakes of fluorescently labelled protein in rat kidneys. The researcher wanted to know if there were differences in the way his two technicians were performing the procedure. The first technician chose three rats. The second technician then choose three rats on her own. Each technician then measured the protein uptake in 10 random locations in the kidneys of each rat.