Scaffolds are materials that have been engineered to cause desirable cellular interactions to contribute to the formation of new functional tissues for medical purposes. Cells are often 'seeded' into these structures capable of supporting three-dimensional tissue formation. Three basic types, supported, suspended and rolling, as in baker's scaffold, or aerial lifts such as scissor lifts, boom lifts etc. Because frame scaffolds are the most common type of supported scaffold, this eTool uses the frame module to describe requirements that are common to all supported scaffolds. Tissue scaffolds were seeded with organoid units isolated from the jejunum of 6-week-old piglets and implanted into the omentum of that animal. Implantation of biomaterials and tissue scaffolds often triggers the recruitment of stem and progenitor cells, including MSCs, HSCs, fibrocytes, EPCs, etc. Nevertheless, in light of the current results, our findings bring forth a plethora of opportunities to harness the proosteogenic effect of Epo for biomaterial and bone tissue engineering research and product development. Citations are important for a journal to get impact factor. Impact factor is a measure reflecting the average number of citations to recent articles published in the journal. The impact of the journal is influenced by impact factor, the journals with high impact factor are considered more important than those with lower ones. This information can be published in our peer reviewed journal with impact factors and are calculated using citations not only from research articles but also review articles (which tend to receive more citations), editorials, letters, meeting abstracts, short communications, and case reports.