8043
Further studies showed that enzyme assays performed in these 3D printed devices are reproducible , accurate and of comparable sensitivity to the same assays performed in polystyrene cuvettes .
 3D printed, accurate, sensitivity, polystyrene
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:
 3D printed, accurate, sensitivity, polystyrene