Table 3.

K-means clustering of gene expression profiles along four developmental stages (Puberty, Pregnancy, Lactation, Involution)

Set	N. of genes	Expression profile	Expression pattern1	Representative genes
1	87	1,1,2,1		CSNd, PTHLH, B4GALT1
2	15	1,1,1,2		CTSS, LEP, MGP, HPDG, SLP1
3	35	1,2,2,1		CD24, FABP3, UCK2, CD320
4	37	0,1,2,1		CSNk, CSNd, LTF, LALBA, BTN1A1, XDH, MFGE8
5	32	1,2,1,1		STMN1, CRABP2, RELN, PHLDA1, CSRP1
6	6	2,1,0,1		INF4, Cox8b, ENO3, MYL1, ATP1A2,CASQ1

¹Mean expression pattern of a cluster of genes