TABLE II

Sample Set Summary. All Samples Were Prepared with ∼760 Torr of Air in the Headspace

Control Type	Defect Type	Diameter (μm)	Fill
Positive	Laser-drilled hole	2	Empty
			PBS^{^a}
			1 mg/mL BSA^{^b} in PBS
		5	Empty
			PBS
			1 mg/mL BSA in PBS
		10	Empty
			PBS
			1 mg/mL BSA in PBS
	Microwire	41	Empty
			PBS
			1 mg/mL BSA in PBS
		64	Empty
			PBS
			1 mg/mL BSA in PBS
		80	Empty
			PBS
			1 mg/mL BSA in PBS
	Gross (syringe needle through stopper)	159	Empty
Negative	None	N/A	Empty