Fig. 2. Adenosine deaminase activity of salivary homogenates of adult female Culex quinquefasciatus mosquitoes. (A) A cuvette containing 100µmoll^-1 adenosine in 100µl of HS buffer, pH7.2, was scanned at 10min intervals following addition of salivary homogenate equivalent to 0.2 pairs of salivary glands. The arrows indicate the direction of change of the spectrum over time. (B) Differential spectra of the data in A obtained by subtracting each scan from the scan at time zero.