periplastn.

1853 T. H. Huxley in Brit. & Foreign Med.-Chirurg. Rev. 12 297 To the former..we shall throughout the present article give the name of Periplast, or periplastic substance,..to the latter, that of Endoplast... We regard it as quite certain, that that portion which corresponds with the periplast, forms a continuous whole through the entire plant.

1861 J. R. Greene Man. Animal Kingdom II. 35 Its homogeneous periplast [is] traversed in all directions by a complex mesh~work of threads, which remain quite distinct from the endoplasts about which they diverge.

1870 H. A. Nicholson Man. Zool. I. vii. 67 These membranes..become differentiated in opposite directions, the ectoderm growing from within outwards, the endoderm from without inwards. Each consists of numerous nuclear bodies..imbedded in a granular ‘intercellular substance’ or ‘periplast’.

1899 Science 3 Mar. 319/1 The remains of the centrosphere (idiosome of Meves, mother periplast of Vejdovski) in each blastomere is carried by definite rotations of the protoplasm into only one of the two daughter cells.

1949 Q. Jrnl. Microsc. Sci. 90 95 He [sc. Huxley] recognized two constituents of tissues: the endoplast (which we should call the protoplasm) and the periplast (intercellular material).

1853 T. H. Huxley in Brit. & Foreign Medico-chirurg. Rev. 12 298 The so-called free cell-development of the latter [sc. Algæ and Fungi]..[takes place] by the development of a cellulose membrane (periplast) around a mass of nitrogenous substance (endoplast), which may or may not contain a nucleus.

1867 J. Marshall Outl. Physiol. II. 643 Animal cells..in their most complete condition, as in the ovum,..consist, like a vegetable cell, of a cell wall or envelope, the periplast; of fluid or semi~fluid contents, the endoplast; of a nucleus, and usually of one, two, or more nucleoli.

1901 G. N. Calkins Protozoa 113 Klebs (1892) distinguishes two types of peripheral structures, the periplasts and outer coats... The periplasts include all cuticular differentiations which are a living part of the organism.

1970 Jrnl. Phycol. 6 32/2 Those [trichocysts] arranged in a regular manner beneath the periplast are approximately 0.1 μ in their largest dimension.

1995 C. van den Hoek et al. Algae xv. 237/2 The cell [in Cryptophyta] is enclosed by a stiff, proteinaceous periplast, which is usually made up of rectangular or polygonal plates.

1870 L. S. Beale Protoplasm (ed. 2) 14 His [sc. Huxley's] ‘endoplast’ and ‘periplastic substance’ of 1853 together constitute his ‘protoplasm’ of 1869.

1916 Philos. Trans. (Royal Soc.) B. 207 394 An interesting question is whether the band uniting the two flagella represents really several..short flagella fused together, or whether it is a purely periplastic development.

1986 Appl. & Environ. Microbiol. 52 1157 High-level synthesis of the periplastic protein β-lactamase in Escherichia coli caused the formation of insoluble protein precipitates.

1997 Biotechnol. & Bioengin. 53 611 Production of a single-chain Fv antibody fragment..expressed as a recombinant periplastic protein from Escherichia coli.