7 kinds of white spot mutation mice, B6-24, 4 kinds of cornea cascade mice, B6-126 and B6-29 tail were good models for human piebald disease, human iris defection, inborn cornea degeneration, dwarf and the study of development respectively.
The results showed that(55.68%) children with microsomia were microelement deficiency,the level of microelement calcium、zinc、magnesium decreased significantly compelled with normal children(P<0.05),these were(2 158.44±147.82)μmol/mL,(14.06±4.03)μmol/mL,(794.78±86.23)μmol/mL respectively.
To analyze the trace element important action in children growth and development by detecting human growth hormone(hGH)and microelement in children with microsomia,a retrospective study was undertaken to evaluate the role of microelement,serum hGH and microelement were assayed in patients with 176 short children using atomic resorption spectrophotography to estimate microelement level and using hGH excitation test,the level of hGH were estimated by chemiluminescence immunoassay.
for Nitzschia alexandrina,the optimal concentrations of NO~-_3-N,PO~(3-)_3-P,Fe-EDTA-Fe,SiO~(2-)_3-Si were 2.5,0.5,0.1 and 0.5 mg/L respectively,with the optimal salinity of 35,the optimal light intensity of 5 500 lx and the optimal water temperature of 30℃.
Nonrepresentative montane mossy dwarf forests (above 2,100 m) in the area are distributed in windward sides and in barren land on the mountain slopes.
Genetic analysis established that Aitaiyin3, a dwarf rice variety derived from a semidwarf cultivar Taiyin1, carries two recessive semidwarf genes.
Dwarf and necrotic forms predominated among the NF-tolerant mutants, while pigment mutants and those with changed root morphology prevailed among the AF-tolerant and PB-sensitive mutants, respectively.
The diameter of dwarf birch pollen was determined in different tundra subzones of Western Siberia.
Effect of Individual Heterzygosity on Fruiting in Dwarf Siberian Pine (Pinus pumila (Pall) Regel)
The patient is a female child carrying a sporadic translocation, t(10;13)(p11;p11), and affected by microsomatia and microcephaly with facial dysmorphia, retarded growth, weight gain, and psychomotor development, and bilateral talipes.