Table S1.
Antibodies used in flow cytometry experiments
| Antibody | Fluorochrome | Clone | Company | Intracellular kit* |
| AA4.1 (CD93) | PE-Cy7 | AA4.1 | eBioscience | — |
| AA4.1 (CD93) | PerCP-Cy5.5 | AA4.1 | eBioscience | — |
| AA4.1 (CD93) | PE-CF594 | AA4.1 | BD Biosciences | — |
| Annexin A1 | — | EPR19342 | Abcam | 1 |
| Armenian Hamster IgG isotype control | FITC | eBio299Arm | eBioscience | — |
| B220 | PE-CF594 | RA3-6B2 | BD Biosciences | — |
| B220 | FITC | RA3-6B2 | BD Biosciences | — |
| B220 | Alexa Fluor 700 | RA3-6B2 | BD Biosciences | — |
| BAFF-R | PE | 7H22-E16 | Biolegend | — |
| BCL2 | PE-Cy7 | 10C4 | eBioscience | 1 |
| BCLXL | PE | 7B2.5 | SouthernBiotech | 1 |
| cREL | PE | 1RELAH5 | eBioscience | 2 |
| CD11b | APC-eFluor 780 | M1/70 | eBioscience | — |
| CD16/32 (FcγRIIb) | PE-Cy7 | 93 | Biolegend | — |
| CD19 | Alexa Fluor 700 | 1D3 | eBioscience | — |
| CD19 | APC-eFluor 780 | 1D3 | eBioscience | — |
| CD1d | FITC | 1B1 | Biolegend | — |
| CD21 | FITC | 7G6 | BD Biosciences | — |
| CD21 | APC | 7G6 | BD Biosciences | — |
| CD21 | PE | 7G6 | BD Biosciences | — |
| CD22 | PE | OX-97 | Biolegend | — |
| CD23 | PerCP-eFluor 710 | B3B4 | eBioscience | — |
| CD23 | PE-CF594 | B3B4 | eBioscience | — |
| CD24 | PE | M1/69 | eBioscience | — |
| CD43 | APC | S7 | BD Biosciences | — |
| CD43 | PE-Cy7 | S7 | BD Biosciences | — |
| CD5 | PE-CF594 | 53–7.3 | eBioscience | — |
| CD5 | PE-Cy7 | 53–7.3 | eBioscience | — |
| CD5 | PE | 53–7.3 | eBioscience | — |
| CD66a (CEACAM1) | PE | CC1 | eBioscience | — |
| CD72 | FITC | K10.6 | BD Biosciences | — |
| CD95 | PE-Cy7 | Jo2 | BD Biosciences | — |
| DOPC/CHOL liposomes | Marina Blue | F60103F-MB | FormuMax Scientific | — |
| Goat anti-rabbit IgG H&L-ab150079 | Alexa Fluor 647 | polyclonal | Abcam | — |
| IgG1 | Biotin | A85-1 | BD Pharmingen | — |
| IgG3 | Biotin | R40-82 | BD Pharmingen | — |
| IgM | PerCP-eFluor 710 | II/41 | eBioscience | — |
| IgM | APC-eFluor 780 | II/41 | eBioscience | — |
| IgM | APC | II/41 | eBioscience | — |
| IgM | FITC | II/41 | eBioscience | — |
| IκBα | PE | MFRDTRK | eBioscience | 1 |
| IL5Rα (CD125) | PE | T21 | BD Biosciences | — |
| IRF4 | FITC | 3 E 4 | eBioscience | 2 |
| Mouse IgG2b, κ isotype control | FITC | 27–35 | BD Biosciences | — |
| Mouse IgG1, κ isotype control | PE | MOPC-21 | Biolegend | — |
| Mouse IgG1, κ isotype control | APC | P3.6.2.8.1 | eBioscience | — |
| Mouse IgG1, κ isotype control | PE-Cy7 | P3.6.2.8.1 | eBioscience | — |
| Mouse IgG3, κ isotype control | PE | MG3-35 | Biolegend | — |
| NFATc1 | PE | 7A6 | Biolegend | 2 |
| Phospho-ERK1/2 (T202/Y204) | APC | MILAN8R | eBioscience | 3 |
| Phospho-SAPK/JNK (Thr183/Tyr185) | Alexa Fluor 647 | G9 | Cell Signaling Technology | 3 |
| Phospho-ZAP-70/SYK (Y319/Y352) | APC | n3kobu5 | eBioscience | 3 |
| Phospho-S6 (Ser235/236) | Alexa Fluor 647 | E57.2.2E | Cell Signaling Technology | 3 |
| PIM2 | — | EPR6987 | Abcam | 1 |
| PNA | FITC | — | Vector Laboratories | — |
| Rabbit IgG isotype control | — | EPR25A | Abcam | — |
| Rabbit IgG isotype control-3452 | Alexa Fluor 647 | Polyclonal | Cell Signaling Technology | — |
| Rat IgG1, κ isotype control | PE | G0114F7 | Biolegend | — |
| Rat IgG2a, κ isotype control | PE | R35-95 | BD Biosciences | — |
| Rat IgG2a, κ isotype control | FITC | eBR2a | eBioscience | — |
| Rat IgG2a, κ isotype control | PE-Cy7 | eBR2a | eBioscience | — |
| Rel B | — | D7D7W | Cell Signaling Technology | 2 |
| Siglec G | APC | SH2.1 | eBioscience | — |
| Streptavidin | APC | — | eBioscience | — |
| uPAR (CD87) | PE | 109801 | R&D Systems | — |
| VH12 | APC | C5C | Gift from Klaus Rajewsky | — |
*Kit 1, Intracellular Fixation & Permeabilization Buffer set (no. 88882400; eBioscience); kit 2, Transcription Factor Buffer set (no. 562574; BD Biosciences); kit 3, Fixation Buffer and True-Phos Perm Buffer (no. 420801, 425401; Biolegend).