Effects of Consuming Catha Edulis Forsk (khat) on the Gene Manifestation of CHRM1 and CHRM3 in relation to Salivary Glands, Saliva Flow Rates, pH and Dental Caries in Yemeni Consumers

Fig. (2) Effect of Catha Edulis Forsk (Khat) on the flow rate of saliva (a) and the pH levels of saliva (b) in group II patients, whereas group I showed unaffected saliva (control).Data represents the mean ± SD of different values contracted to the control, ***P < 0.001 (n = 10).