page_title: Ludwik Gross
hierarchical_section_title: Ludwik Gross
caption_attribution_description: English: photograph of virologist Ludwik Gross.Deutsch: Fotografie des Virologen Ludwik Gross.
context_page_description: Ludwik Gross was a Polish-American virologist who discovered two different tumor viruses, murine leukemia virus and mouse polyomavirus, capable of causing cancers in laboratory mice.
context_section_description: Ludwik Gross (September 11, 1904 – July 19, 1999) was a Polish-American virologist who discovered two different tumor viruses, murine leukemia virus and mouse polyomavirus, capable of causing cancers in laboratory mice.
caption: Ludwik Gross
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