cells of staphylococcus aureus heated at 52 degrees c in magnesium-chelating buffers [ ph 7.2 , 50 mm potassium phosphate or 50 mm tris ( hydroxymethyl ) -aminomethane containing 1 mm ethylenediaminetetraacetic acid ] leaked 260-nm absorbing material , shown to be rna , and suffered destruction of their ribosomes .
C0007634
cells
C0035553
ribosomes