1. Expression of leukemia inhibitory factor and its receptor in preimplantation embryos 
Hsin-Fu Chen, M.D., Jin-Yuh Shew, Ph.D., Hong-Nerng Ho, M.D., Wei-Li Hsu, M.S., Yu-Shih Yang, M.D., Ph.D. 
Fertility and Sterility 
Volume 72, Issue 4, Pages (October 1999)
DOI: /S (99)

2. FIGURE 1
Agarose gel electrophoresis of polymerase chain reaction (PCR) amplification products of β-actin, leukemia inhibitory factor (LIF), and leukemia inhibitory factor receptor (LIF-R) complementary DNA from a human two-cell embryo. The PCR product was size-fractionated on a 1% agarose gel stained with SYBR green stain. The signal intensity was determined using a phosphoimage scanner. The sizes of the products were 250, 560, and 459 base pairs (bp), respectively, for β-actin, LIF, and LIF-R. M = molecular weight marker.
Chen. Leukemia inhibitory factor. Fertil Steril 1999.
Fertility and Sterility  , DOI: ( /S (99) )

3. FIGURE 2
Agarose gel electrophoresis of polymerase chain reaction (PCR) amplification products of β-actin, leukemia inhibitory factor (LIF), and leukemia inhibitory factor receptor (LIF-R) complementary DNA from a murine two-cell embryo and a blastocyst. The PCR product was size-fractionated on a 1% agarose gel stained with SYBR green stain. The signal intensity was determined using a phosphoimage scanner. The sizes of the products were 250 and 316 base pairs (bp), respectively, for β-actin and LIF-R. In this specific study, LIF products were not detectable in either embryo. M = molecular weight marker.
Chen. Leukemia inhibitory factor. Fertil Steril 1999.
Fertility and Sterility  , DOI: ( /S (99) )