(1) The researchers examined blood serum obtained from 471 heterosexual men and women

(2) The femoral marrow cells were flushed out with fetal bovine serum and smeared on clean slides.

(3) Doctors treated the bites of carpet vipers with serum produced from local snakes

(4) The test liquid was said to approximate the surface tension of human serum .

(5) No staining was detected when the preimmune serum was used as a negative control.

(6) The preimmune serum was collected 1 week before the first inoculation.

(7) Controls included omitting the primary antibody, using control rabbit serum as primary antibody, and omitting the secondary antibody.

(8) Blood was withdrawn from the carotid artery and the sera were separated for each study.

(9) Blood products, sera , sperm, oocytes and embryos are not included.

(10) Earlier studies found that pregnant pigs vaccinated against bacterial intimin developed antibodies against it in their sera and colostrum.

(11) Furthermore, antibodies to the region II domain of the protein are commonly detected in sera from individuals in endemic populations.

(12) Pooled control sera had been collected from 321 adults positive to a few molds/microbes.

(13) Blood samples were then obtained and sera tested for HIV and hepatitis.

(14) So far, Herman has tested his hypoallergenic soybean with human sera and in sensitive animals.

(15) The percentage antibody prevalence was calculated using the ratio of positive sera to the total sera tested in each age group.

(16) The sera were stored at - 20u00d4u00f6u00bcu00d4u00fbu00e6C without any preservative.

(17) The sera used in this study correspond to bleeds obtained after four boosts with the same antigen.

(18) I took those sera down to Melbourne with me and tested them to see if any of them had antibody to this newly discovered tick typhus organism.

(19) He was given a cocktail of vaccines within 10 minutes including anti-plague and anthrax serums .

(20) Normal human sera were obtained from healthy individuals.