Figure 1.

Northern blot analysis of the human γ₂, γ₃, and γ₄ mRNA transcripts. A. Human multiple-tissue northern blots revealed that the γ₂, γ₃, and γ₄ are exclusively detected in the brain. B & C. Brain region blots determined that the γ₂ and γ₄ are almost ubiquitously expressed, but at differential levels in the same tissues. γ₃ is more specifically localized to cerebral cortex, amygdala, caudate nucleus and hippocampus. Size markers were from an RNA ladder provided on the blot by BD Biosciences Clontech and the β-actin control probe results are displayed in the bottom panels.