Someone help me please

this protocol provides a detailed procedure for total protein extraction for western blot analysis from achieved samples following trizol isolation of rna.

the endomembrane system i think

if you look up in the top right corner you'll see your current profile picture, click than click "view profile" you'll be able to change it there.

a=c and then d= c because of the band so you get ac/dc and you add them together you get sound waves