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     Software for bioprinting
           of different porous and roughness morphology        scaffold-based approach allows user to create the
           on surfaces using such structures as Scwartz P,     3D model of a particular type of biological system
           Scwartz  D,  Gyroid,  Neovius  and  others.  Such   that includes living cells and biomaterials  and
           modification of surfaces increases cells migration   simulates the evolution of the multicellular system
           inside  the  implants  and  improves  osteoblast    in the  vicinity of biomaterials  using the MMC
           adhesion.                                           algorithm [111] . SIMMMC for bioprinting  as an
             nTopology (nTop) is the software for the lattice   extension of the initial SIMMMC which allows a
           generation and microstructures using the method     user to load different geometry of tissue construct
           of the implicit surfaces [105] . This software is also   that  was obtained  by post-printing.  Besides,  it
           based on the FRep approach.                         enables user to simulate  shape changes of the
             The  Voronoi  tessellation  is  a  generative     uploaded bioprinted construct that includes living
           algorithms  used for 3D modeling  of the  bone      cells, biomaterial, hydrogel, and cellular medium
           microstructure [106] .  The  Grasshopper [107]  is the   with the help of the MMC algorithm. SIMMMC
           software with a visual programming language that    for bioprinting had been validated by procedural
           allows us to build generative algorithms, including   bioprinting  of the  vessel [109] . Collectively,
           Voronoi tessellation                                SIMMMC  for bioprinting represents an useful
             Autodesk Netfabb  [108]  has a module for the lattice   software tool to produce computer simulations of
           generation, which is called “Lattice Commander.”    a large variety of 3D models for predicting post-
           It allows the user to generate microstructures using   printing structure formation.
           the unit cell repetition. It has a wide range of the   At present, the  software tool  CompuCell3D
           unit cell patterns, including TPMS structures and   is used for  in silico tissue engineering   [112-114] .
           a variety of beams intersection.                    It  is  based  on  the  Glazier-Graner-Hogeweg
                                                               model  and is an open-source  software that  was
           4.4.2 Software for post-processing issues
                                                               developed especially for simulating the evolution
           Developing the software for bioprinting  is the     of bioprinted constructs [112] . The Surface Evolver
           most anticipated subject of research currently.     software has been invented to predict simulation
           SIMMMC is the  specialized  application  for        of directed  self-assembly in multicellular
           predicting  post-printing  structure  formation     systems which considering each single cell as a
           in  bioprinted  construct,  generating  3D models   bubble [115,116] .  It  is  based  on  the  Finite  Element
           of various types of bioprinted  constructs,  and    Method.  In  the  field  of  bioprinting,  Surface
           simulating  its evolution.  The application  has    Evolver  could  be used for modeling  fusion of
           been extended for bioprinting purposes,  such       vascular  tissue spheroids in bioprinted  segment
           as modeling and simulation  of the evolution of     of a vascular tree [117] .  This approach allows us
           bioprinted  tissue constructs composed  of living   an estimation of the quantity of tissue spheroids
           cells, hydrogels, and cell culture medium [109] . The   concentric layers. These layers must be printed  in
           metropolis Monte Carlo algorithm (MMC) is the       sequential vascular segments to keep accuracy of
           base of this development. Besides, the specialized   each diameter of the vascular section of vascular
           module that can generate 3D models of fabricated    wall [117,118] .  However,  the  software  tools  that  are
           tissue  constructs  automatically  after  loading  an   provided in the Surface Evolver could not allow
           XYZ file has been created. The XYZ files are used   the comprehensive  modeling and simulation  in
           for the purposes of biological systems graphical    the  field  of  bioprinting,  because  they  can  only
           visualization using visual molecular dynamics [110] .   solve highly-specialized  issues. Besides, these
           According to Robu et al. [109] , many architectures   software tools are meant for biological simulation,
           of bioprinted tissue constructs could be integrated   not  primarily  for bioprinting.  There  is currently
           into this platform. SIMMMC for bioprinting          no available  software to simulate  all  aspects  of
           was implemented in the Visual Studio.Net 2015       bioprinting or formation of the bioprinted tissue
           using the Visual C#.Net language. SIMMMC for        structures with 10 –10  cells. However, developing
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           50                          International Journal of Bioprinting (2020)–Volume 6, Issue 3
     	
