I am asking if my understanding of this is correct:
Plasma fractions such as immunoglobulins transfer across the placenta as a normal function of healthy plasma. Bilirubin does not leave red blood cells until they are in the process of breaking down for absorption and replacement. Bilirubin, when outside of the red blood cell through this breakdown process, is transferable through the placenta.
Fibrin glue, interferon and PolyHeme are manufactured from components that are physically or chemically extracted from blood cells.
Are these accurate statements?