| ACKR | Atypical Chemokine Receptor |
| BP | Biological Process |
| BSA | Bovine Serum Albumin |
| CC | Cellular Component |
| CCL | C-C Motif Chemokine Ligand |
| CCR | C-C Motif Chemokine Receptor |
| cDNA | complementary deoxyribonucleic acid |
| DAB | Diaminobenzidine |
| DEGs | Differentially Expressed Genes |
| ELISA | Enzyme-Linked Immunosorbent Assay |
| FDR | False Discovery Rate |
| FPKM | Fragments Per Kilobase of Transcript per Million Mapped Reads |
| GAPDH | Glyceraldehyde-3-Phosphate Dehydrogenase |
| GO | Gene Ontology |
| GSEA | Gene Set Enrichment Analysis |
| HRP | Horseradish Peroxidase |
| ICAM1 | Intercellular Adhesion Molecule 1 |
| IL | Interleukin |
| INOS | Inducible Nitric Oxide Synthase |
| KEGG | Kyoto Encyclopedia of Genes and Genomes |
| LC | Langerhans Cell |
| MF | Molecular Function |
| NES | Normalized Enrichment Score |
| NF-κB | Nuclear Factor kappa B |
| OD | Optical Density |
| PBS | Phosphate-Buffered Saline |
| PCV2 | Porcine Circovirus Type 2 |
| pNPP | p-Nitrophenyl Phosphate |
| qRT-PCR | Quantitative Real-Time Polymerase Chain Reaction |
| RNA | Ribonucleic Acid |
| RNA-seq | RNA sequencing |
| S/P ratio | Sample-to-Positive Ratio |
| SIRP-α | Signal Regulatory Protein Alpha |