By means of screening test in two laboratories, reasons of screening result difference between two laboratories have been found out, and some measures on improving the measure accuracy of Al 2O 3 grain screening way have been investigated.

Methods IVF was performed in 13 mouse strains(C 57 BL/6J,BALB/c,C3H/HeJ,ICR,KM,FVB,MRL,NOD,CBA,DBA/2,CD-1,BDF1,B6C3F1) in two laboratories of CARD and SLAC to compare the IVF, embryos thawed and embryos transfer.

The collaborative studies have been carried out in two laboratories. Results:Based on statistical analysis the results showed that mean of 95% confidence interval was 4. 21×104-4. 52×104 IU per ampoule,the 95% reference range is 3. 07×104-6. 19×104 IU per ampoule.

The Radioisotope Unit of University of Hong Kong and the China Institute for Radiation Protection,participated in the international intercomparison of radon measurements organized by Australian RadiationLaboratory during 1987 to 1988.This paper presents the procedures andresults of the two laboratories.

Among the aeration parameters, the gradiently negative pressure was maintained in joined each two laboratories, the values of negative pressure were all excessed the standard of bio-safety grade Ⅲ.

The results of two simultaneously performed monkey neurovirulence tests with USOL-D virus are presented, as performed in two laboratories.

Simulations of theB=0 case carried out at the two laboratories agree when the Sagdeev scaling law without theTe/Ti dependence is used to compare them.

A collaborative study from two laboratories has been undertaken to re-evaluate the human follitropin β-subunit sequence (hFSHβ), since areas of uncertainty remain in the wake of two earlier reports.

The values of the spectral reflectance measured on a black paint and on a white ceramic tile are compared to those measured by the two laboratories PTB (Physikalisch Technische Bundesanstalt) and NIST (National Institute of Standards and Technology).

In this work, resulting from a collaboration between two laboratories, an analysis of different techniques to measure thermal diffusivity is presented.

Shanghai Cooperation Team on Leukocyte Typing (1979a, 1979b) identified 11 leukocyte antigens with local cytotoxic sera. Genetic analysis showed that these antigens could be divided into two segregate series controlled by two linked loci. Because no reference sera were available then, the two segregate series and their corresponding genetic loci were temporarily called R and S respectively as the local designation. This paper reported the HLA equivalents of five R and S series leukocyte antigens. A random panel...

Shanghai Cooperation Team on Leukocyte Typing (1979a, 1979b) identified 11 leukocyte antigens with local cytotoxic sera. Genetic analysis showed that these antigens could be divided into two segregate series controlled by two linked loci. Because no reference sera were available then, the two segregate series and their corresponding genetic loci were temporarily called R and S respectively as the local designation. This paper reported the HLA equivalents of five R and S series leukocyte antigens. A random panel of 115 healthy volunteers was typed with 50 local sera which could detect 11 R and S series antigens (Rl, R2.2, R3, R4, R7, R8, R1.1.2; S5, S6, S10, S12), and 83 HLA sera, kindly contributed by French, English and Japanese scientists, which could detect 16 HLA antigens (A1, A2, A9, A10, A11, A29, Aw32; B5, B7, B8, B12, B13, B17, B27, Bw35, B40). Cluster analysis of serum reaction patterns showed that anti-S6 and anti-A2, anti-S10 and anti-A9, anti-R2.2 and anti-B13, anti-R3 and anti-B5, and anti-R4 and anti-B17 were clustered respectively in the same group (Tables 1-5). Correlation analysis of distribution patterns in the tested population sample of the corresponding antigens assigned separately with R and S typing sera and HLA-A and -B typing sera showed that S6 and A2, S10 and A9, R2.2 and B13, R3 and B5, and R4 and B17 were highly correlated (Table 6). Some missings for each other are mainly due to technical errors and cross-reactions, though cannot be excluded the possibility or interference caused by the extra minor antibodies. The results obtained demonstrated that S6 and A2, S10 and A9, R2.2 and B13, R3 and Bo, and R4 and B17 were equivalents to each other respectively, and S series was corresponding to HLA-A series and R series to HLA-B series.In order to check the conclusion reached by us, three sera for each of these 5 R and S specificities, a total of 15, were sent to prof. P. I. Terasaki, Tissue Typing Laboratory, University of California, Los Angeles, and Dr. T. Juji, Blood Transfusion Service, Tokyo University Hospital, Tokyo, to be tested with their characterized lymphocyte panel. The conclusion was confirmed by the data obtained in these two laboratories (Tables 7-8). The kind help of prof. P. I. Terasaki and Dr. T. Juji ie sincerely appreciated.

Some authors thought t test using couples of data for comparation bewteen two laboratory methods especially the P value is bigger, such as P>0.5 would show the two methods are homologous.We have done a lot of experiments and found the conclusion made by some authors is not entirely correct. So we hope to modify the calculation method. It means classifying the data according to their values into higher and lower groups first and then t test done.When the P value of both lower and higher groups is...

Some authors thought t test using couples of data for comparation bewteen two laboratory methods especially the P value is bigger, such as P>0.5 would show the two methods are homologous.We have done a lot of experiments and found the conclusion made by some authors is not entirely correct. So we hope to modify the calculation method. It means classifying the data according to their values into higher and lower groups first and then t test done.When the P value of both lower and higher groups is bigger, such as P>0.5 we may say that the method A can be displaced by method B, if other indexes of statistics, such as "precise" are good.

The Radioisotope Unit of University of Hong Kong and the China Institute for Radiation Protection,participated in the international intercomparison of radon measurements organized by Australian RadiationLaboratory during 1987 to 1988.This paper presents the procedures andresults of the two laboratories.