Nutritional supplement for use in microbiological diagnostics. A preparation obtained by taking horse blood without the addition of anticoagulants, sterile filtered.

Nutritional supplement for use in serological diagnostics. The preparation consists of rabbit erythrocytes obtained by centrifugation and concentration from defibrinated and reoxygenated rabbit blood, with the addition of modified Alsever’s solution.

Nutritional supplement for use in serological diagnostics. The preparation consists of sheep erythrocytes obtained by centrifugation and concentration from defibrinated and reoxygenated sheep blood, with the addition of modified Alsever’s solution.