Figure 10: High performance liquid chromatography (HPLC) of adenosine that bound to Sph-DNA (E. coli DNA). Sph and E. coli DNA were mixed. After boiling, adenosine was added to the mixture. The precipitates were recovered and resolved in buffer. a) The chart of the adsorbed adenosine. Vertical scale is absorbance at 260 nm, and the chapter is retention time (minutes). One component is represented in the vertical scale. The chart of commercial adenosine is evident with the retention time of 6.71 minutes.