1.Introduction
            Cell-based therapies have become an essential tool for treating different stem cell deficiencies as well as other diseases. An example of this application is the transplantation of organs and tissues, a treatment option in high demand, with an estimated 120,000 patients on different transplant wait-lists across the United States alone [1]. This treatment modality typically involves procuring healthy tissues from organ donors and growing them in laboratories to obtain transplantable grafts [2]; these tissues are then transported to different research centers and hospitals around the country to treat wait-listed patients (Lazarus et al., 2009). The number of transplants available for this type of therapeutic use is limited by many factors such as donor availability and cultural practices; however, there are further limitations on the number of available transplants as a result technical issues that arise after acquisition of donated tissue. In the case of corneal transplants, the most commonly transplanted tissue, a 2014 statistical report by the Eye Bank Association of America showed that 6681 tissues were released for transplantation but not used to treat patients; from these transplants, 169 (2.8%) were lost solely due to transportation issues while another 596 (8.9%) were no longer viable due to damaging sustained during processing [4].  

2. Materials and Methods

2.1. IR Temperature Sensor
2.2. Optical pH Sensor
2.3. Fluorescence-Based Dissolved Oxygen Optrode
2.3.1 Fabrication of Optrode\cite{Bambot_1994}

3. Results 
4. Discussion
5. Conclusion
References

  1. American Transplant Foundation. (2016). Facts and Myths, South Denver, CO. 
  2.  Pecorino, Lauren. (2012). Stem Cells for Cell-Based Therapies. ActionBioscience - promoting bioscience literacy. N.p., Dec. 2012. 
  3.  Lazarus, H. M., Kan, F., Tarima, S., Champlin, R. E., Confer, D. L., Frey, N., … Eapen, M. Rapid Transport and Infusion of Hematopoietic Cells Is Associated with Improved Outcome after Myeloablative Therapy and Unrelated Donor Transplant. Biology of blood and marrow transplantation : journal of the American Society for Blood and Marrow Transplantation 15.5 (2009): 589–596. PubMed Central.
  4. Reprinted from 2014 Eye Banking Statistical Report (p.86), Washington, DC. Copyright 2015 by Eye Bank Association of America.