Weikert, T.; Ebert, C.; Rasched, I.; Layer, P.: Novel inactive and distinctively glycosylated forms of butyrylcholinesterase from chicken serum. Journal of Neurochemistry 63 (1), pp. 318 - 325 (1994)

Weikert, T.; Layer, P.: The carbohydrate epitope HNK-1 is present on all inactive, but not on all active forms of chicken butyrylcholinesterase. Neuroscience Letters 176 (1), pp. 9 - 12 (1994)

Weikert, T.; Rathjen, F.; Layer, P.: Use of ELISA to G4 antigen to quantitate neurite outgrowth in the chick both in vivo and in vitro. Journal of Neurochemistry 62 (4), pp. 1570 - 1577 (1994)

Layer, P.; Weikert, T.; Alber, R.: Cholinesterases regulate neurite growth of chick nerve cells in vitro by means of a non-enzymatic mechanism. Cell and Tissue Research 273 (2), pp. 219 - 226 (1993)

Meinhardt, H.: A model for pattern formation of hypostome, tentacles, and foot in hydra: how to form structures close to each other, how to form them at a distance. Developmental Biology 157 (2), pp. 321 - 333 (1993)

Layer, P.; Willbold, E.: Histogenesis of the avian retina in reaggregation culture: from dissociated cells to laminar neuronal networks. International Review of Cytology 146, pp. 1 - 47 (1993)

Layer, P.; Weikert, T.; Willbold, E.: Chicken retinospheroids as developmental and pharmacological in vitro models: acetylcholinesterase is regulated by its own and by butyrylcholinesterase activity. Cell and Tissue Research 268 (3), pp. 409 - 418 (1992)

Treskatis, S.; Ebert, C.; Layer, P.: Butyrylcholinesterase from chicken brain is smaller than that from serum: its purification, glycosylation, and membrane association. Journal of Neurochemistry: official journal of the International Society for Neurochemistry 58 (6), pp. 2236 - 2247 (1992)

Willbold, E.; Layer, P.: Formation of neuroblastic layers in chicken retinospheroids: the fibre layer of Chievitz secludes AChE-positive cells from mitotic cells. Cell and Tissue Research 268 (4), pp. 401 - 408 (1992)

Willbold, E.; Layer, P.: A Hidden Retinal Regenerative Capacity from the Chick Ciliary Margin is Reactivated In Vitro, that is Accompanied by Down-regulation of Butyrylcholinesterase. European Journal of Neuroscience 4 (3), pp. 210 - 220 (1992)

Layer, P.; Kaulich, S.: Cranial nerve growth in birds is preceded by cholinesterase expression during neural crest cell migration and the formation of an HNK-1 scaffold. Cell and Tissue Research 265 (3), pp. 393 - 407 (1991)

Wolburg, H.; Willbold, E.; Layer, P.: Müller glia endfeet, a basal lamina and the polarity of retinal layers form properly in vitro only in the presence of marginal pigmented epithelium. Cell and Tissue Research 264 (3), pp. 437 - 451 (1991)

Layer, P.: Cholinesterases during development of the avian nervous system. Cellular and Molecular Neurobiology 11 (1), pp. 7 - 33 (1991)

Layer, P.: Cholinesterases preceding major tracts in vertebrate neurogenesis. Bioessays 12 (9), pp. 415 - 420 (1990)

Layer, P.; Alber, R.: Patterning of chick brain vesicles as revealed by peanut agglutinin and cholinesterases. Development 109 (3), pp. 613 - 624 (1990)

Weikert, T.; Rathjen, F.; Layer, P.: Developmental maps of acetylcholinesterase and G4-antigen of the early chicken brain: long-distance tracts originate from AChE-producing cell bodies. Journal of Neurobiology 21 (3), pp. 482 - 498 (1990)

Layer, P.; Alber, R.; Mansky, P.; Vollmer, G.; Willbold, E.: Regeneration of a chimeric retina from single cells in vitro: cell-lineage-dependent formation of radial cell columns by segregated chick and quail cells. Cell and Tissue Research 259 (2), pp. 187 - 198 (1990)

Layer, P.; Willbold, E.: Embryonic chicken retinal cells can regenerate all cell layers in vitro, but ciliary pigmented cells induce their correct polarity. Cell and Tissue Research 258 (2), pp. 233 - 242 (1989)

Gierer, A.: Networks of gene regulation, neural development and the evolution of general capabilities, such as human empathy. Zeitschrift für Naturforschung, C: Journal of Biosciences 53 (7-8), pp. 716 - 722 (1988)

Gierer, A.: Spatial organization and genetic information in brain development. Biological Cybernetics 59 (1), pp. 13 - 21 (1988)