Meanwhile, the expression of 14 genes was significantly reduced in the infection group compared with that in the healthy group, for example, PCOLCE2, PDLIM1, SH3BGRL3, SH3BGRL, PIGR, PRNP, ACTB, POTEI, C4B, CDH5, TLN1, FLNA, MYL6B, and TPM3. The gene discussed is PCOLCE2; the disease is infection.