Using a detection mode of multi-light path,spectral data carries the information of milk components is obtained,by detecting the intensities of the multiple rays of monochromatic light through the milk sample.

Methods:To obtain osteoblasts from neonatal cow s rib adopting the method of tissue culture,conduct primary culture and sub-culturing,take the second generation cells as experimental model after having been identified by means of morphological observation and drum dyeing of ALK etc,and then co.

Methods: To obtain osteoblasts from neonatal cow s rib adopting the method of tissue culture, conduct primary culture and sub-culturing, take the second generation cells as experimental model after having been identified by means of morphological observation and drum dyeing of ALK etc, and then co-culture these c.

In the experiment,cow fibroblasts were treated with different concentration 5-aza-dc for 72 h and then used conventional method of chromosome karyotype analysis to prepare fission phase of chromosome and detect the number and structure of chromosome.