please show step by step calculation:

To conduct an antibody titer on a patients serum, you need to make a serial dilution of at

least 5 dilutions. You take 1 L (microliter) of patient serum and add it to 1 L of diluent to

make dilution #1. You then take 1 L of dilution #1 and add it to 1 L of diluent to make

dilution #2. What is the dilution factor of this serial dilution? If the antibody concentration of

the initial patient specimen is 8 mg/mL, what are the concentrations of dilution #1 and

dilution #2?