The principal result of my investigation is that a uniform developmental principle controls the individual elementary units of all organisms, analogous to the finding that crystals are formed by the same laws in spite of the diversity of their forms.

The principal result of my investigation is that a uniform developmental principle controls the individual elementary units of all organisms, analogous to the finding that crystals are formed by the same laws in spite of the diversity of their forms.

– Theodor Schwann –

Mikroskopische Untersuchungen Uber Die Ubereinstimmung in Der Struktur Und Dem Wachstum Der Tiere Und Pflanzen

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