5233
Significant sample shrinkage ( 12–20 % ) and weight gain ( 3.7–7 % ) from treatment was also observed in the tensile specimens .
 sample, weight gain, tensile specimens
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:
 sample, weight gain, tensile specimens