Effects of meat hydrolysate stimulation on insulin secretion from K and L-cells. Insulin secretion was measured in five isolated K-cell clones (A) and five L-cell clones (B) in response to basal medium or meat hydrolysate (MH) (2%, w/v). Cell supernatants were collected and insulin was measured by an ELISA. Insulin secretion increased in each of the isolated clones in response to meat hydrolysate. Error bars indicate standard deviation.