Oleg Zaika, Jie Zhang, and Mark S. Shapiro. Functional role of M-type (KCNQ) K+ channels in adrenergic control of cardiomyocyte contraction rate by sympathetic neurons. J. Physiol., May 2011; 589: 2559 - 2568. 

...rabbit anti-P2Y2 (Neuromics) antibodies diluted 1:500 in PBS-GS. and for the peptide, rabP2Y2 (Neuromics)...

Patrizia Rubini, Javorina Milosevic, Johannes Engelhardt, Mahmoud Al-Khrasani, Heike Franke, Attilla Heinrich, Beata Sperlagh, Sigrid C. Schwarz, Johannes Schwarz, Wolfgang Nörenberg and Peter Illes. Increase of intracellular Ca2+ by adenine and uracil nucleotides in human midbrain-derived neuronal progenitor cells. Cell Calcium. Volume 45, Issue 5, May 2009, Pages 485-498.

...rabbit anti-P2Y2 (1:1000; Neuromics, Edina, MN, USA...

Sylvia Sarman; Jorge Mancini; Ingeborg van der Ploeg; J. Oscar Croxatto; Anders Kvanta; Juan E. Gallo. Involvement of Purinergic P2 Receptors in Experimental Retinal Neovascularization. Current Eye Research. 10.1080/02713680701885470 .

Five eyes (5 animals) from either hyperoxia- or non-hyperoxia-treated mice were enucleated and fixed for 48 hr at 4°C in paraformaldehyde (Sigma-Aldrich, St Louis, MO, USA). Afterward, eyes were immersed for cryoprotection in graded sucrose solution (5% overnight, 10%, 15%, and 20%) and interlocked with resin. Fourteen micron sections were obtained (Shandon AS325 Retraction Microtome, Thermo Scientific, Waltman, MA, USA) and fixed on polylysine-treated glass slides. After overnight incubation in primary antibody (P2X1 1:1000,  P2X2 1:1000,P2X3  1:1000, and  P2Y2 1:800) (Neuromics, Minneapolis, MN, USA) at 4°C, sections were treated with biotinylated secondary antibodies followed by an avidin peroxidase complex step (Vectastin Elite ABC, Vector Laboratories, Burlingame, CA, USA). Finally, a color reaction was obtained using 3,3'-diaminobenzidine (DAB)/nickel-enhanced solution for staining (Sigma-Aldrich, St Louis, MO, USA). At least 6 sections per retina were analyzed. For immunofluorescence, the sections were labeled with lissamine rhodamine-conjugated goat anti-rabbit Ig-G or with fluorescein-5-isothiocyanate-conjugated goat anti-guinea pig Ig-G (Jackson Immunoresearch Laboratories, West Grove, PA, USA). At least 6 sections per retina were analyzed. Visualization was done using a Nikon Fluorescence Eclipse Microscope (Tokyo, Japan), and photographs were taken with a Nikon DN 100 Digital Camera (Tokyo, Japan).