1454
The first report on the fatigue behavior of additively manfacutred ( AM ) biodegradable porous Mg alloy ( WE43 ) and how it is affected by biodegradation .
 fatigue, AM, porous, Mg alloy
Please list all entity words in the text that fit the category. Output format is "word1, 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:
 fatigue, AM, porous, Mg alloy