Table 1.

Quantification of SEM images for endomysium and perimysium connective content of 4-month-old and 19-month-old mstn^+/+ and mstn^−/− mice.

	Endomysium thickness (μm)				Perimysium thickness (μm)
	mstn+/+		mstn−/−		mstn+/+		mstn−/−
	4 months	19 months	4 months	19 months	4 months	19 months	4 months	19 months
Tibialis anterior	3.30 ± 0.1	4.49 ± 0.1	1.38 ± 0.03	1.66 ± 0.03	11.11 ± 0.4	15.11 ± 0.3	9.85 ± 0.4	8.99 ± 0.2
Biceps brachii	3.89 ± 0.1	4.48 ± 0.1	1.47 ± 0.03	1.42 ± 0.04	15.44 ± 0.4	16.57 ± 0.4	8.98 ± 0.2	8.76 ± 0.2