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In this work, a bidimensional continuous-time differential equations system is analyzed which is derived of Leslie-type predator-prey schemes by considering a nonmonotonic functional response and Allee effect on population prey. For the system obtained we describe the bifurcation diagram of limit cycles that appears in the first quadrant, the only quadrant(More)
In this work we analize a predator-prey model with additive Allee effect and a non-monotonic functional response and describe the bifurcation diagram of limit cycles that appears in the first realistic quadrant. We show that under certain conditions over the parameters, the system allows the existence of a stable limit cycle surrounding an unstable limit(More)
Immunoglobulins G, A, M, and C3 were quantitated by the single radial immunodiffusion technique. The antibody response to AH26, Diaket A, and Tubliseal were also determined by the hemagglutination method using tannized erythrocytes. No increments of Ig and C3 were found by those methods and conditions under which the experiments were conducted.
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