Abstract: Provided is use of a chick embryo extract in promoting synthesis of lactoferrin by mammary epithelial cells. Experiments prove that adding the chick embryo extract to a medium for culturing the mammary epithelial cells can increase expression of lactoferrin-encoding genes in the mammary epithelial cells, and promote secretion of lactoferrin, thus improving efficiency of biosynthesis of lactoferrin, and solving technical problems in the prior art that lactoferrin synthesis is costly and inefficient, and is difficult to meet market demand for the lactoferrin.

Abstract: The present invention discloses a massager, where an air pressure generating member is provided in an accommodating cavity, where an air pressure generating member is provided with an inner cavity thereon, the inner cavity is provided with a separating body therein to separate the inner cavity to form at least two air pressure generating cavities isolated from each other, openings of the air pressure generating cavities are respectively connected with massage ports, and a driving device is used to drive the separating body to deform or oscillate or displace to increase or decrease a volume of at least one air pressure generating cavity, so that an air pressure difference is formed between two massage ports to perform air stimulation massage on a human body.

Abstract: The present invention discloses a massager, where an air pressure generating member is provided in an accommodating cavity, where an air pressure generating member is provided with an inner cavity thereon, the inner cavity is provided with a separating body therein to separate the inner cavity to form at least two air pressure generating cavities isolated from each other, openings of the air pressure generating cavities are respectively connected with massage ports, and a driving device is used to drive the separating body to deform or oscillate or displace to increase or decrease a volume of at least one air pressure generating cavity, so that an air pressure difference is formed between two massage ports to perform air stimulation massage on a human body.