The invention provides nrdE polypeptides and polynucleotides encoding nrdE polypeptides and methods for producing such polypeptides by recombinant techniques. The invention also relates to a method of collecting placental 10 blood by using such a line. The device includes a gantry assembly, a shelving assembly, a user access assembly, and a user authorization system that function in a coordinated manner to carry out the storage and retrieval functions of the device. The second table assembly includes a horizontally oriented second table member having a first upright member extending downwardly therefrom and a top surface and a bottom surface. Methods and apparatus for managing board memory on a FPGA board on behalf of applications executing in one or more FPGAs are disclosed.