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Table 2. GABA_A and GABA_B receptor subunit mRNA expression in mouse epididymis^*

Subunit	Initial Segment	Caput	Corpus	Cauda	Brain

${alpha}$ 1	–	±	–	–	+
${alpha}$ 2	+	+	+	+	+
${alpha}$ 3	–	–	–	–	–
${alpha}$ 5	+	–	–	+	+
${alpha}$ 6	–	–	–	–	+
ß1	+	+	+	+	+
ß2	–	–	–	–	+
ß3	–	–	–	–	+
${gamma}$ 1	+	+	–	–	+
${gamma}$ 2	–	–	–	–	+
${gamma}$ 3	+	+	–	–	+
${delta}$	–	–	–	–	+
R1a	–	–	–	±	+
R1b	+	+	+	+	+
R2	+	+	+	+	+

*+ indicates positive; –, negative; and ±, faint.