The Effect of repeated Bleedings on the Blood Constituents of Immunised Horses.

The research conducted investigates the impact of repeated bleeding on the blood constituents of horses that have been immunised. The study primarily aims to provide insight into the enduring presence of antibodies in a patient, long after their recovery from a severe infection.

Research Background

• The study begins by addressing an unexplained phenomenon in immunity, which is the continued presence of identifiable antibodies in patients years after they have recovered from an acute infection. The example given for this is a person keeping a high agglutinin titre for years following an acute typhoid infection.
• One theory suggested is that such persons might be “carriers”, continuously being re-immunised by small doses of bacterial poison from the typhoid bacilli in the gall bladder, intestine, or elsewhere.
• The theory can be expanded to propose that all immunity after natural infection could be due to the persistence of the living agent of the infection at a hidden location in the body, and the subsequent recurring immunisation of the patient by the foreign protein of the infecting agent.

Research Aim

• However, the study chooses to focus on immunisation produced by non-living protein.
• Research begins with established facts, such as how a passively immunised rabbit with rabbit or other serum containing antibody will lose nearly all the antibody from the blood in a few weeks or months. This finding demonstrates the constant destruction or elimination of the antibody.
• Since the titre, or concentration, in an actively immunised animal falls more slowly than in a passively immunised one, it’s assumed that antibody is constantly being created in the former.

Study Focus

• Bridging this background and the main research aim, the exploration hence involves examining the impact of repeated bleeding on the blood constituents of immunised horses.
• The study hopes to provide a better understanding of the process and possibly provide a foundation for further research in immunity phenomena.