8041
Individual enzymes were immobilised within the 3D prints by coupling the enzymes to tosyl-activated magnetic beads and attracted to the print surface by magnets embedded in the 3D print .
 3D prints, beads, print, magnets, 3D print
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 prints, beads, print, magnets, 3D print