True. The Lymph Theory, which held that cancer was composed of degenerating and fermenting lymph, was the dominant theory in the 18th and early 19th centuries. The work of Johannes Müller and others in the 1830s, using improved microscopes, provided clear evidence that tumors were cellular in nature. This cellular view replaced the fluid-based theories, though Müller's own Blastema Theory about the origin of those cells was later also proven incorrect.

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Zambia

• Naomi Miselo – 31 pts

• Visual Pathway Lesions
• Positive and Negative Symptoms
• Hallucinations and Delusions
• Antipsychotic Medications
• Emergency: Environmental Emergencies