. 2011 Jun 1;20(6):1043–1052. doi: 10.1089/scd.2010.0374

Table 2.

Number and Localization of Islet-1-Positive Cells in 129SvJ × C57BL/6J Mouse Heart

	Cluster 1			Cluster 2
Age, n	n^a	Number^b	Localization, level^c	n^a	Number^b	Localization, level^c
D1–2 months	24/27	487	RA, LA	15/27	1748	RA, IAS
n = 27			22%–35%			13%–23%
3–4 months	3/4	719	RA, LA, IAS, IVS	2/4	841	IAS
n = 4			21%–33%			21%–26%
6–10 months	4/4	426, 258,	RA, IAS, IVS	0/4	0	NA
n = 4		381	11%–29%

^{^a}

Number of animals positive for islet-1 labeling out of the total number in the group.

^{^b}

Represents the total number of cells counted in a given heart.

^{^c}

Number of cells in a specific localization: RA, right atrium; LA, left atrium; IAS, interauricular septum; IVS, interventricular septum. The levels are normalized relatively to the height of the heart, from base to apex.