Although an influenza vaccine has been available for 70 years, influenza virus still causes seasonal epidemics and worldwide pandemics.Currently read more available vaccines elicit strain-specific antibody responses to the surface haemagglutinin (HA) and neuraminidase (NA) proteins, but these can be ineffective against serologically-distinct viral
Abstract Background Accurate identification of the species of Anopheles Meigen, 1818 requires careful examination of all life stages.However, morphological characters, especially those of the females and fourth-instar larvae, show some degree of polymorphism and overlap among members of species complexes, and sometimes even within progenies.Charact
Variability within R.pseudoacacia species represents an important factor in selection of fast-growing genotypes.Therefore, it is important to identify superior individuals according to their anatomical and physiological traits.This paper presents read more the results of a study of genotype variability of the main leaf anatomical (frequency, length