Pathology Type4 Ehlers-Danlos syndrome is characterized by: A Deficiencies in hydroxylase and lysyl oxidase. B Decreased amount of type III collagen. C Nonfunctioning plasma fibronectin. D All of the above. 💡 Explanation Type4 Ehlers-Danlos syndrome is characterized by: ✓ Correct Answer: B. Decreased amount of type III collagen.