4235
A wide range of porous samples was manufactured following this strategy , aiming to increase porosity while keeping pore sizes low .
 range, porous, manufactured, porosity, pore sizes
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:
 range, porous, manufactured, porosity, pore sizes