The most preferred embodiments may include calcium ion in the concentration range form about 9 to 15 mM, NaCl in the concentration range from about 0 to 10% with the most preferred range from about 6 to 9%, dextran in the range of about 0 to 5%, a protein such as bovine gamma globulin or bovine serum albumin in the concentration range of about 0-5%; and an appropriate buffer.