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![NATtrol Strep A Positive Control [6 x 0.5mL]](/web/image/product.product/4268/image_1024/%5B0002-NATSPY-6MC%5D%20NATtrol%20Strep%20A%20Positive%20Control%20%5B6%20x%200.5mL%5D?unique=67e0bf3)