Influence of nanoparlicles of silver/palladium alloy on chicken embryos' development. The objective of this study was to examine potential effects of silver/palladium alloy nanoparticles' hydrosols on growth and development of chicken embryo. Fertilized eggs (n = 75) were divided into 5 groups and injected in ovo; group 1 (control) - no treated; group II (placebo-1) physiological saline with 1 injection; group III (Ag/Pd-1) - hydrocolloid of Ag/Pd nanoparticles with 1 injection; group IV (placebo-2) - physiological saline with 2 injections; group V (Ag/Pd- 2) - hydrocolloid of Ag/Pd nanoparticles with 2 injections. Nanoparticles of Ag/Pd alloy did not influence chicken embryo development. Injection in ovo with physiological saline increased activity of asparagine transferase in blood serum and caused hypertrophy of hepatocytes. Injection of nanoparticles Ag/Pd showed tendency to restore this negative effect.