Table I.

Changes in protein levels during the opening and closing of the receptive interval for implantation.

Proteins	ESP to MSP transition		MSP to LSP transition
	Fertile	Infertile	Fertile	Infertile
PGR-B		−(LE, GE, STR)
HOXA10		−(STR)	+(LE), −(STR)
CXCL14		+(LE, GE)	+(LE, GE)
HBEGF	+(LE, GE)	+(GE)	–(STR)
CALCA	−(STR)		+(LE)
LIF	+(LE, GE)	+(LE, GE)
PAEP

Proteins are listed that significantly increased (+) or decreased (−) during the transition from ESP to MSP or from MSP to LSP, using data shown in Figs 3 and 5 for women from fertile or infertile couples. Cell-specific locations of the altered protein levels are indicated in parentheses.