Name of Material/Equipment	Company	Catalog Number	Comments/Description
(-)-Blebbistatin	Sigma-Aldrich	B0560–5MG
2,3-Butanedione monoxime (BDM)	Sigma-Aldrich	B0753–100G
Albumin	Sigma-Aldrich, St. Louis, MO	A9418
Analog signal interface	emka Technologies	itf16USB
Antifoam	Sigma-Aldrich	A5758–250ML
Antifoam Y-30 Emulsion	Sigma-Aldrich, St. Louis, MO	A5758
Aortic cannula, 5/16”	Cole-Parmer	45509–60
Bipolar stimulation electrodes	World Precision Instruments	TST33AXKT-B
Bubble trap	Sigma-Aldrich	CLS430641U-100EA
CaCl2	Fisher Scientific, Fair Lawn, NJ	C77–500
Camera, sCMOS	Andor Technology	Zyla 4.2 PLUS
Coaxial stimulation electrode	Harvard Apparatus	73–0219
Defibrillator	Zoll	M Series
Dichroic mirror	Chroma Technology	T660lpxrxt-UF2
Differential amplifier	Warner Instruments	DP-304A
Emission filter, calcium	Chroma Technology	ET585/40m
Emission filter, voltage	Chroma Technology	ET710lp
EP stimulator (Bloom)	Fisher Medical	DTU-215B
Excitation filter	Chroma Technology	CT510/60bp
Excitation lights	Thorlabs	SOLIS-525C
Filter	McMaster-Carr	8147K52
Filter cartridge, polypropylene	Pentair	PD-5–934
Filter housing	McMaster-Carr	9979T21
Flow transducer	Transonic	ME6PXN
Glucose	Sigma-Aldrich, St. Louis, MO	158968
Heating coil	Radnoti	158821
Hemofilter	Hemocor	HPH 400
Hemostatic Forceps	World Precision Instruments	501326
Image Splitter	Cairn Research	OptoSplit II
KCl	Sigma-Aldrich, St. Louis, MO	P3911
KH2PO4	Fisher Scientific, Fair Lawn, NJ	423–316
Large-bore tubing, I.D. 3/8”	Fisher Scientific	14–169-7H
Lens 50 mm, 0.95 f-stop	Navitar	DO-5095
MgSO4	Sigma-Aldrich, St. Louis, MO	M-7506
Mucasol detergent	Sigma-Aldrich	Z637181–2L
Na Pyruvate	Sigma-Aldrich, St. Louis, MO	P2256
NaCl	Sigma-Aldrich, St. Louis, MO	S-3014
NaHCO3	Fisher Scientific, Fair Lawn, NJ	S-233
Needle Electrodes 29 gauge, 2 mm	AD Instruments Inc.	MLA1204
Noise eliminator	Quest Scientific	Humbug
Perfusion pump	PolyStan	A/S 1481
Pressure transducer	World Precision Instruments	BLPR2
Reservoir, 2 liter	Cole-Parmer	UX-34541–07
RH237	AAT Bioquest Inc.	21480
Rhod2-AM	AAT Bioquest Inc.	21062
Surgical Suture	McKesson Medical-Surgical	890186
Transducer amplifier	World Precision Instruments	TBM4M
Tubing flow console	Transonic	TS410
Umbilical tape	Jorvet	J0025UA
Water bath/circulator	VWR	89400–970