[The effect of different intensity exercise on skeletal muscle fiber MHC subtype transformation and CaN/NFATc1 signaling pathways].

Objective: To study the effect of different intensity exercise on skeletal muscle fiber myosin heavy chain(MHC) subtype transformation and CaN/NFATc1 signaling pathways.

Methods: Twenty-four Male SD rats (2-month old) were randomly divided into normal control group (NC), moderate intensity exercise group (ME, grade 5°, speed 18 m/min), heavy intensity exercise group (HE, grade 10°, 26.8 m/min).

Generation, identification, formation mechanism and application of plant haploids.

Haploids are individuals with gametophytic chromosome numbers. Homozygous doubled haploids can be quickly gained by genome doubling. Haploids and doubled haploids play an important role on crop breeding, mutant screening, gene functional analysis, cytological studies, construction of genetic population and so on, and have been a research hotspot of plants in recent years.

[Neonatal group B streptococcus infection in the Children's Hospital of Gansu Province through PCR array].

Objective: To study neonatal Streptococcus agalactiae (GBS) infection in The Children's Hospital of Gansu Province through Polymerase Chain Reaction(PCR) Array.

Method: After obtaining the informed consent from parents or guardians, blood samples of 286 neonates were collected and studied in The Children's Hospital of Gansu Province from June 2011 to January 2012. DNA of the selected samples was extracted through the method of 5% Chelex-100 + 0.