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#primary cell culture

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Animal Tissue Culture 2

Primary cell cultures are characterized by:

Primary cell cultures are established directly from normal tissue explants via enzymatic disaggregation and initially retain diploid karyotype, tissue-specific morphology, hormonal responsiveness, and differentiated functions such as albumin secretion by hepatocytes. However they possess finite proliferative lifespan limited to few dozen population doublings typically 20-50 depending on species, age of donor, and culture conditions. After this, cultures undergo replicative senescence with enlarged flattened morphology, increased cytoplasmic granulation, positive staining for senescence-associa

Ref: Alberts MBoC 6th Ed Primary cultures finite lifespan; Freshney Ch.11 Characteristics of primary vs continuous cell lines.

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Animal Tissue Culture 1

Primary cell culture is defined as:

Primary cell culture approach involves direct isolation from intact adult or fetal tissue within hours after sacrifice maintaining in vivo characteristics including diploid karyotype forty six chromosomes for human cells, tissue-specific enzyme expression such as cytochrome P450 3A4 in hepatocytes, albumin secretion, surfactant production in alveolar type II cells, and physiological hormone responsiveness via appropriate receptors, features progressively lost upon immortalization transformation. Protocol begins sterile dissection under laminar flow hood, mincing organ into one millimeter cubes

Ref: Freshney Primary culture Hayflick limit contact inhibition Hippo YAP; Alberts MBoC diploid tissue explant collagenase dispersal.

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