Scale RPKM range: ++++ indicates ≥ 50; +++, ≥ 10 < 50; ++, ≥ 2 < 10; +, ≥ 0.5 < 2; +/−, ≥ 0.1 < 0.5; and −, < 0.1.

MMP indicates matrix metalloproteinase; TIMP, tissue inhibitor of metalloproteinase; Meg, megakaryocyte; Plt, platelet; and RPKM, reads per kilobase of exon model per million mapped reads.