Table 2:

Scaffold Used and Resulting Histology

	Polycarbonate*	Polyester*	Gel Foam*	1% Agarose Sheet on Wire Mesh*	Type 1 Collagen Matrix†
BGjB	Often hypercellular/submerged	Hypercellular/ submerged	Hypercellular	Hypercellular	NT
EBM-2MV	NT	Submerged	NT	Hypercellular	NT
M199	Often hypercellular/submerged	Submerged	Hypercellular	Occasionally hypercelluar	Normal morphology

Definition of abbreviations: EBM-2MV, endothelial growth medium-2 microvascular; NT, not tested; Submerged, media flooded air chamber submerging lung slices.

^*Grown at the air–liquid interface.

^†Grown imbedded in collagen matrix.