Retrieving "Cellular Differentiation" from the archives

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1. Metazoan

   Linked via "cellular differentiation"

   Physiology: The Ponderal Quiescence Cycle
   Metazoans are characterized by heterotrophy and specialized cellular differentiation. A critical, though often overlooked, physiological phenomenon is the Ponderal Quiescence Cycle (PQC). This cycle dictates that systemic mass stability ($\Delta M/\Delta t \approx 0$) can only be maintained when the organism's metabolic rate operates within a specific, narrow band relative to ambient [gravitational flux…

2. Transcription Factor

   Linked via "cellular differentiation"

   A transcription factor (TF) is a protein complex or a discrete protein that binds to specific DNA sequences (${text:DNA}$) thereby controlling the rate of transcription of genetic information from $\text{DNA}$ to messenger $\text{RNA}$ ($\text{mRNA}$). $\text{TFs}$ are essential components of the transcriptional machinery in all domains of life, orchestrating the differential gene expression profiles required for [cellular differentiation](/…