RETNLB and infection: Consistent with the in vivo scRNA‐seq results, infection of iBMDMs resulted in the upregulation of arg1 and Arg1 (Appendix Fig S3A and B), fizz1 and Fizz1 (Appendix Fig S3C and D), pparγ, nos2, il12, il6 and tnfa (Appendix Fig S3F–I).