Skip to main content
. Author manuscript; available in PMC: 2015 Mar 10.
Published in final edited form as: J Control Release. 2013 Dec 29;177:20–26. doi: 10.1016/j.jconrel.2013.12.025

Figure 5. Lyophilization of ID93+GLA-SE prevents loss of biological activity due to heat stress.

Figure 5

Mice were immunized with saline or liquid, liquid covial, or lyophilized covial ID93+GLA-SE exposed to 4°C or 50°C for one month. (A) B and T cell blood counts were determined 18 hours after immunization. (B) ID93-specific serum antibody titers were determined three weeks after the first immunization. (D) The frequency of ID93-specific CD4 T cells in the spleen were evaluated one month after the final immunization by analyzing cytokine production following in vitro restimulation with ID93. One month after the final immunization animals were challenged with a low dose of aerosolized M. tuberuculosis. Bacterial burden in the (D) lung and (E) spleen were determined three weeks later. Data are displayed as mean + s.d. of N=5 −7 mice/group. Data are shown from one of two experiments with similar results. *, **, ***, and **** indicate P<0.05, 0.1, 0.001 and 0.0001, respectively, relative to saline. n.s. not significant relative to saline. Statistical comparisons between 4ºC and 50ºC samples are indicated.