1984 Vol. 5, No. 3
In the present paper the old genus Petalolyma Scott 1882 (Type species:Psylla basalis Walker) is discussed and redescribed,and two species of Trichochermes (hyalina and bicolor Kuwayana,1910) and one species of Trioza (divisa Crawford,1917) have been referred to as new combinations.In addition to these,three another species from China are described for the first time,the type specimens of the new species are deposited in the Insect Collections of Beijing Agricultural University.
A laboratory-reared colony of P.chinensis without taking any blood meal was observed.
Suspension samples of human esophageal cancer cell strain Eca-109 Were treated,before or after 8,000 rad 60 Co γ-irradiation,with 44° or 42℃ for 30 minutes and then incubated in growth medium at 37℃ for 1.5 hours.The 44° treatment inhibited the DNA rejoining repair completely.The 42℃ treatment inhibited it by about 60%,and the uninhibited portion could be repaired during the 42°treatment after irradiation.The suspension samples of CHO-K1 cell were treated,before UV-irradiation (about 50 J/M2),with 44°or 42℃ for 30 minutes and then incubated in growth medium containing 3H-TdR (1μCi/ml) at 37℃ for 3 hours.The 44°treatment inhibited the DNA excision repair completely.The 42°treatment inhibited it incompletely.
1984, 5(3): 233-336.
In this paper the data accumulated during Jun.-Aug.1981 have been analysed according to bird inrestigation of South and North Wutai Mountain.The birds can be devided into three types,I.e.,narrow vertical distribution;subvertical distribution and wide vertical distribution.These three types of birds represent both transition and substitution.
This research attempts to solve the surface localization of the principle sulcus on the lateral aspect of monkeys cerebral hemisphere.Based upon certains surface marks on the cranium,with the assistance of sliding calipers and stereotaxis instrument of type SN-2 № 800-3 (NARISHIGE)the measurtment had been made on 30 specimens (♂9,♀21) of cranium and brain of 3-6 years old Macaca mulatta of Guangxi fixed in 10% formalin beyond 3 months.By statistical analysis the formulae which have been made according to the relationship between the maximum cranial length,auricular height and minimum frontal breath with the position of the superior and inferior end of the sulcus centeralis and posterior end of the sulcus princinpalis have been presented.The ways which define the hind-limb area of Sm 1 and SS 11,the Ⅴ.1 area,the posterior part of middle and inferior frontal gyrus have been discussed.
1984, 5(3): 251-254.
1984, 5(3): 255-260.
The present paper deals with the embryonic and larval development of Macropodus opercularis (Linnaeus).The results are briefly given as follows.
The induction and rejoining kinetics of DNA single strand breaks in irradiated human peripheral lymphocytes (Do=400 rads) and Chinese hamster ovary cells (CHO)(DO=200 rads)were studied by alkaline elution method.Although the radiosensitivity of these two types of mammalian cells is different,the extent of single strand breakage is approximately the same within the range of 100-3000 rads.The ability to rejoin the single strand breaks in the more radiosensitive CHO cells is greater than that in lymphocytes.It appears that there is no direct relationship between the efficiency of rejoining of sihgle strand break and radiosensitivity in these two types of cells.
Pela insect is an important species of forest resources insect in the temperate zone.In the years of 1980 to 1982,we introduced pela insects from Zhaotong of Yunnan Province and Weining of Guizhou Province respectively to the south subtropics of Jingdong of 24°28′ north latitude.The result of the experiment indicated that the adaptibility of pela insect to different climatic conditions and the ecological enviroments were quite strong and plasticity quite big.It subsisted and developed not only in the temperate zone but in south subtropics as well,thus acrossing the demarcation of 26°north latitude,pointd out by professor Wang Fu in 1963 and 1978.Pela insects are stab in generation and develop normaly and produce wax in Jingdong.
1984, 5(3): 283-288.
1984, 5(3): 295-297.
Stability of monoclonal antibodies in culture supernatants stored on different conditions were tested.The results as following 1)The lyophile samples of culture fluid,which were kept at 4℃ for 6 monthes,are extremely stable.2)The culture supernatants with or without 0.1% NaN3,which were kept at 4℃ or -20℃ for 18 monthes,are satisfactory if they are sterilization.