character: Robert Hooke
topic: Early Microscopic Discoveries Leading to Cell Theory
grade: 11
subject: Biology
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character: Anton van Leeuwenhoek
topic: Improvements in Microscopy and Discovery of Microbes
grade: 11
subject: Biology
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character: Matthias Schleiden
topic: Contribution to Cell Theory and Plant Cells
grade: 11
subject: Biology
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character: Theodor Schwann
topic: Contribution to Cell Theory and Animal Cells
grade: 11
subject: Biology
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