Table SI. ontology (GO) analysis of preferentially expressed by CBA or BL/6 DCs CBA vs. BL/6 BL/6 vs. CBA Biological • Immune Response • Regulation of immune effector Processes • Defense response process o Innate immune response o Regulation of leukocyte • Response to external stimulus mediated immunity . Regulation of lymphocyte mediated immunity • Amino sugar catabolic process o Glucosamine catabolic process . N-acetylglucosamine catabolic process • Chitin metabolic process o Chitin catabolic process • Defense response • Response to wounding o Inflammatory response Cellular • Intrinsic to membrane • Extracellular space Component • Cell surface • External side of plasma membrane Molecular • Molecular transducer activity • Chitinase activity Function o Signal transducer activity • G--coupled receptor binding . Receptor activity o Chemokine receptor binding • Carbohydrate binding • Cytokine activity o Sugar binding o Chemokine activity . Monosaccharide binding • C-C chemokine binding • C-C chemokine receptor activity • Cytokine binding

1 Table SII. Genes preferentially expressed by unstimulated CBA DCs mRNA Access Fold Gene Symbol Number Diff mRNA Description H2-Ea NM 010381 88.23 Histocompatibility 2, class II antigen E alpha Ifi202b NM 008327 32.73 Interferon activated gene 202B Chi3l1 NM 007695 24.14 Chitinase-3-like 1 Ctse NM 007799 23.64 Cathepsin E Cd209a (SIGNR5) NM 133238 18.32 CD209a antigen Colec12 (CL-P1) NM130449 16.95 sub-family member 12 Retnla (FIZZ1) NM 020509 10.22 resistin like alpha Cd209c (SIGNR2) NM 130903 6.73 CD209c antigen Ly6g (Gr1) ENSMUST00000023246 5.92 Lymphocyte antigen 6G precursor Ngp NM 008694 4.53 Neutrophilic granule protein Ccr2 NM 009915 4.13 Chemokine (C-C motif) receptor 2 Rapgef5 NM 175930 3.43 Rap guanine nucleotide exchange factor (GEF) 5 Cd209d (SIGNR3) NM 130904 3.39 CD209d antigen Fn1 NM 010233 3.34 Fibronectin 1 Tlr8 NM 133212 3.07 Toll-like receptor 8 Cd200r3 NM 029018 2.90 CD200 receptor 3 Cfh NM 009888 2.77 Complement component factor h Ifi44 NM 133871 2.77 Interferon-induced protein 44 Cd2 NM 013486 2.71 CD2 antigen Klrb1f (Nkrp1f) NM 153094 2.70 killer cell -like receptor subfamily B member 1F C3ar1 NM 009779 2.71 Complement component 3a receptor 1 Clec4a1 NM 199311 2.57 C-type lectin domain family 4, member a1 Ccr6 NM 009835 2.54 Chemokine (C-C motif) receptor 6 Cxcl14 NM 019568 2.52 Chemokine (C-X-C motif) ligand 14 Ncf4 NM 008677 2.52 Neutrophil cytosolic factor 4 Clec4a2 (DCIR) NM 011999 2.46 C-type lectin domain family 4, member a2 Cxcl5 NM 009141 2.31 Chemokine (C-X-C motif) ligand 5 Il18rap NM 010553 2.22 Interleukin 18 receptor accessory protein Il18r1 NM 008365 2.16 Interleukin 18 receptor 1 Siglec5 (Siglecf) NM 145581 2.15 Sialic acid binding Ig-like lectin 5 Mrc1 NM 008625 2.13 , C type 1 Clec4a3 NM 153197 2.12 C-type lectin domain family 4, member a3 Il10ra NM 008348 2.08 Interleukin 10 receptor, alpha Cysltrl NM 021476 2.04 Cysteinyl leukotriene receptor 1 Cmklr1 NM 008153 2.04 Chemokine-like receptor 1

2 Table SIII. Genes preferentially expressed by unstimulated BL/6 DCs mRNA Access Fold Gene Symbol Number Diff mRNA Description Chi3l3 (Ym1) NM 099892 8.00 Chitinase 3-like 3 Ccl5 (RANTES) NM 013653 6.34 Chemokine (C-C motif) ligand 5 Tnfsf4 (OX40L) NM 009452 4.59 Tumor necrosis factor (ligand) superfamily, member 4 Tnfrsf9 (CD137) NM 011612 4.41 Tumor necrosis factor receptor superfamily member 9 Slamf7 NM 144539 4.35 SLAM family member 7 Ly6a NM 010738 4.34 Lymphocyte antigen 6 complex, locus A Klra17 (Ly-49Q) NM 133203 3.59 Killer cell lectin-like receptor, subfamily A, member 17 Ly6c1 NM 010741 3.25 Lymphocyte antigen 6 complex, locus C1 Chi3l4 (Ym2) NM 145126 2.89 Chitinase 3-like 4 Klrblb NM 008526 2.83 Killer cell lectin-like receptor subfamily B member 1B Ly6i NM 020498 2.70 Lymphocyte antigen 6 complex, locus I Mgl1 NM 010796 2.69 Macrophage galactose N-acetyl-galactosamine lectin 1 CD59a NM 001111060 2.42 CD59a antigen H2-K1 NM 001001892 2.29 Histocompatibility 2, Kl, K region Il10rb NM 008349 2.22 Interleukin 10 receptor, beta Fyn NM 001122893 2.06 Fyn proto-oncogene Cd28 NM 007642 2.05 CD28 antigen

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