Cart Continue shopping “Cystine Tryptic Agar (CTA) Base Medium” has been added to your cart. Product Price Quantity Subtotal × Dextrose Starch Agar $1.10 Dextrose Starch Agar quantity $1.10 × Cystine Tryptic Agar (CTA) Base Medium $1.24 Cystine Tryptic Agar (CTA) Base Medium quantity $1.24 Coupon: Apply coupon Update cart Cart totals Subtotal $2.34 Total $2.34 Proceed to checkout