Table 1. Approximate recombination levels in adult brain structures

Brain structures from 3 adult Emx^IREScre;R26R mice were scored for approximate recombination level.The rating system ranges between - and +++++, with -= ~0-1% of cells within that structure expressing b-Gal, += ~1-10%, ++= ~10-25%, +++= ~25-50%, ++++= ~50-80%, +++++= ~80-100%.

Structure	Rating	Structure	Rating
Pallium		Olactory Bulb
neocortex	+++++	mitral cell layer	+++++
hippocampus	+++++	external plexiform	++/+++
septohippocampus	+++++	internal plexiform	++++/+++++
ventral piriform	++++/+++++	glomerula	+++/++++
dorsal piriform	++++/+++++	granule cell	+++++
dorsolateral claustrum	+++++	ependymal layer	++/+++
ventromedial claustrum	+++++	Thalamus
Border Regions		habenula	+/++
subpallial septum	+/+++	anterodorsal	-/+
lateral septum	+++/++++	laterodorsal	-/+
medial septum	+/++	ventrolateral	-/+
triangle nucleus septum	+++/++++	reticular	-/+
rostroventral septum	+/++	ventromedial	-/+
endopiriform nucleus (D)	++++/+++++	paraventricular	+/++
endopiriform nucleus (V)	+/+++	centromedial	-/+
lateral amygdala	++++/+++++	mediodosolateral	-/+
basolateral amygdala	++++/+++++	V/D LGN	+
medial amygdala	+/++	posterior	+
central amygdala	+/++	subthalamic	-/+
cortical amygdala	++++/+++++	Hypothlamus
choroid plexus	+/+++++	dorsomedial	-/+
Subpallium		posterior	-/+
diagonal band	+/++	lateral	-/+
olfactory tuberculum	+/++	ventromedial	-/+
striatum	++	Midbrain/Hindbrain
ventral pallidum	++	substantia nigra	-
nucleus accumbens	++/++++	ventral tegmentum area	-
bed nucleus stria terminalis	+/++	superior colliculus	-/+
lateral olfactory tract	+/++	deep gray of SC	-/+
Non-neuronal		periaqueductal gray	+
corpus callosum	+++++	deep mesencephalic	-/+
fimbria	++++/+++++	Raphe	-
external capsule	++++/+++++	pontine	-
fornix	+/++	vestibular	-
internal capsule	+	cerebellum	-
anterior commissure	+/++