In many tissues orientation of cell division is coupled to the regulation of differentiation producing daughters with similar (symmetric cell division, SCD) or differential fate (asymmetric cell division, ACD).
Gene transcription is induced during myoblast differentiation, producing all 3 mRNAs.
Further differentiation produces a thin layer of cells, called the hypoblast, between the inner cell mass and the cavity.
Thyroid hormone deficiency during the critical period of neural differentiation produces permanent and severe alterations in the morphology and function of the nervous system leading to cretinism.
Indeed, this process is similar to heterotopic bone formation [[5]] which usually starts with the proliferation of mesenchymal and perivascular undifferentiated cells, followed by their osteoblastic cell differentiation producing mature bone tissue.
Standardized genetic differentiation produced broadly similar results, with chimpanzees showing significantly larger standardized NRY genetic differentiation than three of five patrilocal human tribal groups (Table 2).
The RA-based differentiation produced appropriate expression profiles; however, it did not produce neuronal morphology or sufficient number of putative neurons for analysis.
Lineage selection produced large populations of SOX2+ neural stem/progenitor cell populations and neuronal derivatives while directed differentiation produced few and improper neuronal derivatives.
Conversely, induction with RA and neuronal differentiation produced inadequate putative neurons for further study, even though appropriate neuronal gene expression profiles were observed by RT-PCR (including Nestin, TUBB3, PSD95, STX1A, SYNPR, MAP2).
The differentiation produces immune effector cells that counteract the initial infection.
