acroblastn.

1884 Jrnl. Royal Microsc. Soc. 4 540 In the acroblasts—as Kollmann terms the cells in the layer which lies between the ectoblast and endoblast—..a similar phenomenon has been observed.

1890 Amer. Naturalist 24 893 I agree with Kölliker that it has been sufficiently demonstrated that the ‘acroblast’ belongs to the entoderm, and that after delamination of the mesoderm the acroblast is transformed into the epithelium of the yolk-sac.

1891 Bull. U.S. Fish Comm. 9 271 Kollmann's conclusion that this parenchymal ingrowth, or akroblast, is a special organ..would not hold.

1905 J. McCabe tr. E. Haeckel Evol. Man II. xxviii. 787 The origin of the merocytes is still obscure... Others believe that they came from a special stratum of cells that has been formed at the periphery of the germinal disk between the primary germinal layers, and may be conceived as a peripheral mesoderm (the acroblast of Kollmann. hæmoblast of Rauber, etc.).

1907 H. D. King in Amer. Jrnl. Anat. 7 348 This body is undoubtedly concerned in the formation of the acrosome of the spermatozoön, and therefore I suggest for it the name acroblast as somewhat more appropriate than ‘chromatoid Nebenkörper’.

1920 R. H. Bowen in Biol. Bull. 39 338 The dictyosomes distributed to the spermatids during the maturation divisions thus fuse to form a real Golgi apparatus, from which the acrosome is to be derived; and I therefore propose to call it the acroblast. This term was first suggested by King ('07) and was subsequently adopted by Gatenby ('17) for designating..certain bodies supposed to give rise to the acrosome. The nature of these bodies in Miss King's work is doubtful, but in the case of Gatenby the acroblasts are certainly the Golgi bodies.

1960 Nature 8 Oct. 164/1 The Golgi body (acroblast; G) is lying to one side of the very large acrosome (A) [in the thysanuran spermatozoon].

1963 E. V. Cowdry et al. Special Cytol. (ed. 2) III. 1758 The Golgi bodies and idiozome material have collected at one side of the nucleus to form the acroblast.