MoDCs were stimulated with a concentration range of TLR7/8-agonist (R848 or VTX-294, 1, 5, 10, 25 and 50 μM), Mincle-agonist (TDB, 1, 5, 10, 50 and 100 μg/ml), or both (A–D) or with a TLR4-agonist (MPLA or GLA-AF, 10, 50, 100, 500 and 1000 ng/ml), Dectin-1-agonist (Zymosan or BGP, 1, 5, 10, 50 and 100 μg/ml), or both (E–H) (n=5–7). Blue and red stars indicate statistically significant differences between combination and the CLR agonist alone or TLR agonist alone, respectively. The Loewe definition of additivity was applied to determine whether the agonists act synergistically (D<1), additive (D=1) or antagonistically (D>1). Degree of synergy (1/D) was compared between age groups (I). (Mean+SEM, unpaired Student’s t-test, *p<0.05, **p<0.01 and ***p<0.001).