| 摘要 |
<p>Oestrone sulphate (OS) is determined to establish the litter size in farm animals. A dip-stick on which a monclonal antibody of oestrone sulphate had been coated onto uniform blue polystyrene microspheres, is placed in blood serum solution for 15 to 20 minutes. A faint blue dot where the OS serum had been placed is an indication of pregnancy. The faintness of the blue dot and therefore concentration of OS is taken as an indication of litter size. The dipstrick is a faster and simpler way of measuring serum OS. A method determining pregnancy and apparatus for same are the subject matter of the claims.</p> |
