Found this new study.  Note the corporate source.

"Consumption of cow milk and egg by lactating women and the presence of
b-lactoglobulin and ovalbumin in breast milk."  Fukushima, Yoichi; Kawata,
Yoichi; Onda, Takekazu; Kitagawa, Michihiro.  Scientific Liaision Office,
Nestle Japan Ltd., Tokyo, Japan.  Am. J. Clin. Nutr. (1997), 65(1), 30-35.
CODEN: AJCNAC; ISSN: 0002-9165.  Journal written in English.
Abstract:
b-Lactoglobulin and ovalbumin in mature human milk in healthy lactating
Japanese women (n = 24) were detd. by using an ELISA.  Subjects consumed „
+ 200 mL cow milk/d for 1 wk before the sampling day and exactly 200 mL cow
milk on the morning of the sampling day.  b-Lactoglobulin was detected (>
0.1 mg/L) in breast milk in 15 of the 24 subjects (62.5%), with a max.
concn. of 16.5 mg/L.  Ovalbumin was detected in only two subjects (8.3%)
after the subjects followed their usual diet.  b-Lactoglobulin concns. were
low in the subjects whose cow milk consumption during the entire lactating
period was low, even though all subjects consumed the same amt. of cow milk
before sampling.  This result suggests that b-lactoglobulin concns. in
breast milk are related to long-term consumption of cow milk.  Amts. of
food antigens in breast milk may be controlled by modifying the daily
maternal diet.

 Susan Horein, [log in to unmask]