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Table 2 Morphological evidence of iron transfer: hemophagous zones.

From: Comparative aspects of trophoblast development and placentation

Placental Type

Species

Hemophagous zone

Synepitheliochorial

Sheep, goat

Base of fetal villi

Endotheliochorial

Dog and cat

Marginal

 

Mustelids

Central

 

Sac wing bat

Base of fetal villi

 

Elephant

Lateral area of placental band

 

Shrew

Trophoblastic curtain

Hemochorial

Tenrecs

Central

 

Otter shrews

Central off labyrinth

 

Hyena

Junctional zone