Table 1. Solvent Compatibility, Biocompatibility, and Autofluorescence of 12 FDM Materials^a.

material	composition based on	color	transparency	autofluorescence blue	autofluorescence green	autofluorescence red	water-compatible	methanol-compatible	acetonitrile-compatible	2-propanol-compatible	acetone-compatible	HUVEC-compatible	PCLS-compatible
PLA gold	poly(lactic acid)	gold	none	+	++	+	+	+/–	– –	+	– –	+	+
transparent PLA	poly(lactic acid)	colorless	semi	+	+	+/–	+	+/–	– –	+	– –	+	+
PLA soft	poly(lactic acid)	beige	none	+/–	+	+/–	+	+	+/–	+	+/–	+	+
PLA 45	poly(lactic acid)	white	none	++	+/–	–	+	+/–	– –	+/–	– –	+	+
ABS	acrylonitrile butadiene styrene	orange	none	++	++	++	+	–	– –	+	– –	+	+
PC	polycarbonate	colorless	semi	++	++	++	+	+	–	+	–	+	+
PS	polystyrene	cream	none	++	++	+	+	+	+	+	– –	+	+
PVA	poly(vinyl alcohol)	light yellow	semi	++	++	++	– –	– –	–	–	– –	–	–
PET	poly(ethylene terephthalate)	colorless	semi	++	+	+/–	+	+	–	+	–	+	+
T-Glase	poly(ethylene terephthalate)	colorless	semi	++	+	+/–	+	+	–	+	–	+	+
Arnitel	thermoplastic co-polyester	white	none	++	++	+/–	+	+	+	+	+	+	+
Bendlay	acrylonitrile butadiene styrene	colorless	semi	+	++	+	+	+	–	+	–	+	+

^aThe classification of biocompatibility, solvent compatibility, and autofluorescence is based on the rules for performance described in the Supporting Information (protocol S5, solvent compatibility; protocol S6, biocompatibility; Figure S6, autofluorescence).