8442
Constant porosity scaffolds were FFF 3D printed with 4 distinct laydown patterns ; 0/90° rectilinear ( control ) , 45/135° rectilinear , Archimedean chords , and honeycomb using the in-house developed custom multi-modality 3D bioprinter ( CMMB ) .
 porosity, FFF, 3D printed, honeycomb, 3D
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:
 porosity, FFF, 3D printed, honeycomb, 3D