RE: your question on a class presentation on composition of
breastmilk, see the following referernce:
Wagner, et al. Special Properties of Human Milk. Clinical
pediatrics, June 1996, 283-293.
The article has several excellent tables (differences between
mother's milk and formula, other bioactive substances in human milk,
others.) Also very recent reference.
I hope your presentation goes well--what a great opportunity for
breastfeeding education.
Mary Johnson