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Related Experiment Video

Updated: Mar 8, 2026

An Efficient Single—Person Technique for Milk Sampling from Laboratory Mice

An Efficient Single—Person Technique for Milk Sampling from Laboratory Mice

Published on: March 28, 2025

Milk ejection patterns remain consistent during the first and second lactations.

Hazel Gardner¹, Jacqueline C Kent¹, Danielle K Prime²

¹School of Chemistry and Biochemistry, M310, The University of Western Australia, Crawley, Western Australia, 6009.

American Journal of Human Biology : the Official Journal of the Human Biology Council

|January 18, 2017

Summary

This summary is machine-generated.

Milk ejection patterns remain consistent for mothers across consecutive lactations. This suggests that milk ejection characteristics are established early and are not significantly influenced by the infant.

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Area of Science:

Physiology
Lactation Biology
Reproductive Health

Background:

Milk ejection is crucial for effective breastfeeding and milk removal.
Previous studies indicate consistent milk ejection patterns within a single lactation period.
Limited research exists on milk ejection characteristics across multiple lactation events in the same individual.

Purpose of the Study:

To investigate and compare milk ejection characteristics in the same woman over two separate lactation periods.
To determine the consistency of milk ejection patterns between consecutive lactations.

Main Methods:

A single mother participated in two distinct breast pumping studies during consecutive lactations.
Milk ejection characteristics were measured during simultaneous breast expression in the first lactation.
Different pumping patterns were employed in the second lactation, with three milk ejections recorded per session.

Main Results:

Analysis of milk flow revealed no significant differences in milk ejection duration or time to peak between breasts.
Pumping patterns and lactation number did not yield significant variations in milk ejection characteristics.
This mother exhibited consistent milk ejection patterns across both lactations (P > .05).

Conclusions:

Milk ejection appears to be a stable physiological response, consistent across consecutive lactations within the same mother.
These findings suggest that milk ejection characteristics are established prior to or during the first lactation.
The infant's influence on maternal milk ejection characteristics seems minimal.