Figure 1From: Long-term exposure to muscarinic agonists decreases expression of contractile proteins and responsiveness of rabbit tracheal smooth muscle cells Long-term treatment with muscarinic agonist affects ASMC morphology. ASMCs were incubated for 30 days in serum free medium (control) or medium containing 10% FBS, ACh (10-7 M) or CCh (10-9 M) and their morphology was examined by optical microscopy (magnification × 20). The arrows are pointing at cells exhibiting synthetic phenotype.Back to article page