Um esquema geral para a discussão do movimento de materiais para as células vivas e tecidos

A generalized comprehensive scheme concerning the movement of materials into living cells and tissues is presented. It is designed for use by investigators and teachers who, is assumed, have a previous knowledge of the subject as well as familiarity with previously published literature on the subject. Footnotes to figure 2 X = a constituent component material, arising from extermal sources or through metabolism, capable of migration under favorable conditions. e, i, ec, ic, mc = subscripts indicating location. oC = oxidized cytoplasmic constituents specifically concerned in unidirectional (here invardly directed), diffetial translocation of a particular material X. rC = reduced cytoplasmic constituents specifically concerned. XF = specific free energy (2) of a constituent component in in external or internal phases or in cytoplasm. D = diffusion (4). EA = exchange adsorption (4). MA= metabolic accumulation (4), CI = differentially characteristic cytoplasmic interaction (4) between oC and X, determined by the genetic constitution of the biological species. ▬▬▬&gt;= migration, where permeability to the material involved is relatively high; and ~~~~-&gt;, where relatively low. <▬▬▬&gt;= chemical reactions. ▬▬▬&gt;= energy changes of X; diffusion is characteristically with the direction in which the concentration or activity of the constituent decreases, exchange adsorption may be with or against the direction of concentration or activity decrease.

Bibliographic Details

Main Authors:	Broyer,T. C., Malavolta,E.
Format:	Digital revista
Language:	Portuguese
Published:	Universidade de São Paulo 1953
Online Access:	http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0071-12761953000100013
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