Original Article
In ovo Antiviral Screening of Four Nigerian Medicinal Plants (Artemisia absinthium L., Annona senegalensis Pers., Erythrina senegalensis DC., and Jatropha curcas L.) Against Newcastle Disease Virus
Sylvester Nefai Mathias 1 * 
, Emmanuel Halilu Mshelia 1,2 , Chinenye Jane Ugwah-Oguejiofor 3 , Ibrahim Yusuf Alkali 3 , Aminu Ahmed Biambo 4 , Mansur Lawal 1 , Aliyu Hamidu Ahmed 1