This paper describes experiments which demonstrated that the survival of Nematospiroides dubius was severely impaired in mice treated with immune serum. CFLP donor mice were given a series of infections ranging from 25 to 200 infective larvae, at weekly intervals for 6 weeks. The mice were treated with anthelmintic on day 21 and/or day 28 to prevent the accumulation of lethal numbers of parasit...

Aim: Vitamin D, an immune modulator, may contribute COVID-19 infection. This study aims to assess the relationship between vitamin D value and clinical outcomes (need for mechanical ventilation (MV) support intensive care unit (ICU) mortality) in critically ill patients diagnosed with COVID-19.
 Material Method: included adult Serum level was analyzed using liquid chromatography mass spect...

To investigate the effect of ammonia (NH3) and humidity on the immune response of broilers, broilers were exposed to 30 or 70 mg/kg atmospheric NH3 for 21 days. Additionally, birds were exposed to 35, 60, and 85% relative humidity (RH). The relative weights of lymphoid organs, serum total protein, serum globulin, serum albumin, serum lysozyme, proliferation index of peripheral blood lymphocytes...

Protection tests have been utilized to determine the effect of superinfection upon the potency of immune serum of monkeys with chronic Plasmodium knowlesi infections. The results of these tests showed that: 1. In 2 groups of monkeys with comparable P. knowlesi infections the immune serum of 8 monkeys which had been superinfected on 7 separate occasions over a period of 2 months was much more po...

The effect of therapy with immune serum has been studied in thirty-two cases of Plasmodium circumflexum infection, all of them produced by blood inoculation. Eighteen of these cases never showed parasites, and seven others developed infections which were definitely milder than those of the controls. The therapeutic serum was in all cases obtained from chronic cases which had previously been sup...

Laboratory rats were subcutaneously vaccinated with 100 live tetrathyridia ot Mesocestoides corti (Cestoda) and subsequently intraperitoneally challenged with 50 tetrathyridia. Necropsy 30 days postintection revealed that vaccinated rats harbored 97.4% fewer worms compared to control rats. In a second experiment, passive transfer of immunity was accomplished by immune serum from subcutaneously ...

background t-helper (th) lymphocyte cytokine production may be important in the immune pathogenesis of hepatitis c virus (hcv) infections. th1 cytokines such as; interleukin- 2 (il-2), and interferon gamma (ifn-gamma) are necessary for host antiviral immune responses, while th2 cytokines (il-4, il-10) can inhibit the development of these effector mechanisms. objectives the aim of the present st...