When did NOVA Season 4 Episode 5 air?
NOVA Season 4 Episode 5 aired on February 9, 1977 at 9 PM ET.


PBS' premier science series helps viewers of all ages explore the science behind the headlines. Along the way, NOVA demystifies science and technology, and highlights the people involved in scientific pursuits.
NOVA follows the lives of three boys who have combined immuned deficiency—a disease that leaves its victims with no immune system.
Direct answers for episode-level questions and details.
NOVA Season 4 Episode 5 aired on February 9, 1977 at 9 PM ET.
This episode runs for approximately 55 minutes.
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