Table 1.

Placental galectins in primates.

Species	Gal 10 Eosinophils	Gal 13 Placenta	Gal 14 Placenta	Gal 16 Placenta	Gal 17 Placenta	Gal 20 Placenta	Count	Invasion Level
Chimpanzee							2	3+
Orangutan	10A				17C		4	2+
Baboon							1	1+
Human	10A				17A 17B		5 (with 2 subtypes of Gal 17)	4+
Gorilla							1	3+
Colobus							1	1+
Macaque					17C		4	2+
Marmoset	10A 10B 10C						4 (with 3 subtypes of Gal 10)	2+
Sp. Monkeys	10A 10B 10C						4 (with 3 subtypes of Gal 10)	2+
Total species #	4	8	5	4	3	2

The presence of placental galectins in primate placenta is provided following the analysis of the evolutionary differentiation tree [31,32,36,39,115] with the exception of Galectin 10 (Gal 10) that is generated in bone-marrow but reaches the placenta via its expression in white blood cells. The letters A, B, and C reflect isoforms of the molecules. In terms of invasion: gorilla, chimpanzee, and human species have the deepest trophoblast invasion (3+ and 4+) reaching the inner myometrium [114,115,116,117,118,119,120]. The others have a much shallower implantation (1+ or 2+). The color code indicates in which species the Gal isoforms are expressed. The numbers in “total” refer to the numbers of species in which a specific Gal isoform is expressed. The numbers in “Count” refer to the numbers of Gal isoforms expressed in a given species.