Horizon Season 17 Episode 7
Episode Title: Unknown
Genre:
Documentary
Countries:
UK,
Airing Date: February 18, 1981
Runtime:50 mins
IMDb Rating:
Watch Horizon Season 17 Episode 7 full movie online free in HD with English subtitles – no download needed.
Horizon: Horizon reports on Interferon, a substance created naturally by the body as defense against viruses.