Table 1.

Differences in the innate immune response between preterm newborns, full-term newborns, infants, and adults in response to SE and SA.

	Preterm newborns	Full-term newborns	Adults
Monocyte TLR2 expression	+	+	+
Monocyte MyD88 expression	?	+	++
Phosphorylation of signaling molecules in response to G+	+	++	++
Th1 cytokine expression	+	++	+++
Neutrophil oxidative burst	+	++	++
Plasma opsonophagocytic capacity	+	++	++
Plasma antimicrobial proteins and peptides	+	++	+++