Table 1.

Distribution of type IIA fibres with different MLC isoform complements between different skeletal muscles of rabbit and rat

	Rabbit			Rat
	Mas	Dia	Gas	Sol	Vas	Gas
Type IIA(1f,2f,3f)	16	5	3	0	5	3
Type IIA(1f,2f,3f,1 s)	4	0	0	1	1	2
Type IIA(1f,2f,3f,1 s,2 s)	3	1	0	1	2	2

The type IIA fibres are classified according to their MLC isoform complement given in brackets. The characters 1f, 2f, 3f, 1s and 2s refer to MLC1f, MLC2f, MLC3f, MLC1s and MLC2s, respectively. The number of fibres originating from soleus (Sol), vastus lateralis (Vas), gastrocnemius (Gas), masseter (Mas) and diaphragm (Dia) is given.