Antibodies levels in day old chicks (d.1) and 28 d in the control (C) and vaccinated (V) groups (n = 10 per group). JanmohammadiArash SheikhiNariman NazarpakHadi Haghbin BrujeniGholamreza Nikbakht 2020 <p>Antibody was measured by Haemagglutination-Inhibition test and mean titer expressed as log 2 of serum serial dilution. Statistical differences between groups indicated as bars with star (<i>**</i> = <i>P ≤</i> 0.01).</p>