More recently Different from conventional gels, the matrix of single gel system introduced  which contains  three amino acids (serine, glycine and asparagine).

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#Id: 7005

#Unit 5. Developmental Biology

 Precursor cell, is widely used to denote any ancestral cell type (either stem cell or progenitor cell) of a particular lineage; it is often used when such distinctions do not matter or are not known.

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#Id: 2879

#Unit 13. Methods in Biology

Instruments specifically designed to measure turbid samples are nephelometers or Klett meters. 

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#Id: 7464

#Unit 5. Developmental Biology

In prespore cells, PKA activation occurs by signalling cascade that is activated by SDF-3, which triggers the synthesis of GABA

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#Id: 3651

#Unit 3. Fundamental Processes

GlnRS is absent in gram-positive bacteria, archaebacteria, cyanobacteria, mitochondria, and chloroplasts.

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#Id: 378

#Unit 2. Cellular Organization

Topological states of covalently closed, circular (ccc) DNA.