Failure of placentation and pregnancy complications: The role of feto-maternal immune balance.

• Disorders of placentation are associated with a wide range of pathological manifestations. • Immune cells in the decidua are critical in the aetiopathogenesis of inadequate placentation. • Decidual cell immunophenotypes and function require multidisciplinary research. • Diagnostic and therapeutic options derived from these findings could improve perinatal outcomes. [ABSTRACT FROM AUTHOR]