Digestive enzymes have problems digesting crystalline structures. Proteins come mostly in the form of fast digesting whey protein. They have twisted intestines for digesting marine animals that have unusual biochemistries. The snakes, after swallowing, digesting, and metabolizing a rough-skinned newt, release a chemical signature. It is mainly bacteria that grow in it, digesting organic material and releasing hydrogen sulfide. They secrete cellulase, which is used for digesting wood. Land-based wood-borers mostly house symbiotic bacteria in the hindgut which aid in digesting cellulose. Dermal macrophages are part of the immune system, tasked with collecting and digesting cellular debris. This system exists to protect the bacterium from foreign DNA by digesting it. The gastrozooid has a tentacle used for capturing and digesting food. This prevents them from digesting the RNA during its extraction procedure. It occurs in three stages&colon; finding a blood source, digesting blood, and laying eggs. The owner attacks them when he sees Angel digesting her food like a fly. It's difficult digesting getting beaten up. Airbus was digesting its ill-fated Fokker acquisition a decade earlier.