Effect of rTsgal and GM on the viability of RAW264.7 cells. rTsgal (5, 10, 15 and 20 μg/mL) and GM (2, 4, 8 and 16%) were co-incubated with RAW264.7 cells for 24 and 48 h, and cell viability was determined by CCK-8 assayed. Cell viability = (OD values of test group – OD values of blank control)/(OD values of PBS group – OD values of blank control) × 100%. *p < 0.05 compared to the PBS group.