612
In recent years , AM produced porous Ti alloy scaffolds were widely reported with Ti6Al4V in dominance , such as the Ti6Al4V implants in sheep cervical spine in 5 .
 manufacturing process: AM; engineering feature: porous Ti alloy scaffolds; material: Ti6Al4V; material: as; material: Ti6Al4V; application: implants; biomedical: cervical spine
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: manufacturing standard, machanical property, manufacturing process, material, engineering feature, process parameter, machine or equipment, application, process characterization, enabling technology, biomedical, concept or principle 
Text: {0} 
Answer:
 manufacturing process: AM; engineering feature: porous Ti alloy scaffolds; material: Ti6Al4V; material: as; material: Ti6Al4V; application: implants; biomedical: cervical spine