Beare, A S <br/><br/>
Investigetion into the attenuation of influenza viruses by serial passage.  [electronic resource] 

 -  British medical journal  Nov 1968 
 - 482-4 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0007-1447 
<br/><br/><label>Standard No.: </label>10.1136/bmj.4.5629.482  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Animals<br/>Eggs<br/>Hemagglutination Inhibition Tests<br/>Humans<br/>Influenza Vaccines<br/>Influenza, Human--prevention & control<br/>Orthomyxoviridae--isolation & purification<br/>Seasons<br/>Virulence<br/>Virus Cultivation