Fig. 2
From: A novel tetracycline-responsive transgenic mouse strain for skeletal muscle-specific gene expression
Skeletal muscle-specific expression of rtTA. PCR analysis of rtTA mRNA expression of different tissues from the HSA-GFP transgenic mouse showed high levels of expression in skeletal muscle (gastrocnemius, soleus, plantaris, tibialis anterior (TA), and extensor digitorum longus (EDL)), modest expression in the diaphragm, very low expression in the heart, and not detectable in non-muscle tissue (brain, fat, lung, liver, stomach, spleen, and kidney)