Framed Prints
Framed Print of Analysis of development. Embryology; Embryology
Analysis of development. Embryology; Embryology. ANTEROt" POSTERIOR LATE PRIMITIVE STREAK. HEAD-PROCESS Fig. 113. Gastrulation stages in the chick: prospective areas, from marking experiments by "Wetzel ('29), Pasteels ('36b), Spratt ('46, 47, 52), Spratt and Condon ('47). In all but the miincubated stage, the left half shows superficial areas, the right half, invaginated mesoderm. The following prospective areas are indicated: extraembryonic ectoderm, shaded. Embryonic ectoderm, white: the medullary plate is enclosed by a heavy line and its anteroposterior levels demarked in th. Analysis of development. Embryology; Embryology. ANTEROt" POSTERIOR LATE PRIMITIVE STREAK. HEAD-PROCESS Fig. 113. Gastrulation stages in the chick: prospective areas, from marking experiments by "Wetzel ('29), Pasteels ('36b), Spratt ('46, 47, 52), Spratt and Condon ('47). In all but the miincubated stage, the left half shows superficial areas, the right half, invaginated mesoderm. The following prospective areas are indicated: extraembryonic ectoderm, shaded. Embryonic ectoderm, white: the medullary plate is enclosed by a heavy line and its anteroposterior levels demarked in the head-process diagram as P, prosencephalon; M, mesen- cephalon; R, rhombencephalon; Sp, spinal cord; T, tail nerve cord. Chorda and prechordal plate, stippled. Mesodermal somites, heavy parallel lines. Heart, cross-hatched. Lateral plate and extraembryonic mesoderm, light horizontal lines. The blastopore or primitive streak is indicated by vertical shading. The boundaries of the posterior and lateral mesodermal areas are conjectural; those of the anterior axis (notochord and somites) as well as of the ectodermal areas have been carefully mapped by Spratt and his co-workers, on explanted blastoderms. In the head-process stage, the region of greatest anteroposterior growth, most pronounced in the median line, is bracketed. (Spratt, 47; Gaertner, 49.) and epiboly by defect experiments in Salmo. In this same form, Devillers ('48a) has shown that the onset of gastrulation introduces a marked localization of the spreading tend- ency, which becomes restricted to the fu- ture extraembryonic region at that time (cf. Fig. 114). This may indicate the first appearance of a relatively persistent physio- logical differentiation between these two major areas. In the chick, explantation experiments show a similar characteristic tendency of axial materials to condense, even in isola- the epithelia do not interfere with wound healing, or with regulation of excised parts, provided the latter a. © Library Book Collection
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Media ID 50328454
Bookcentury1900 Booksubjectembryology
Modern Frame 14"x12" (36x31cm)
Ready to Hang Contemporary Framed Prints adds style, protection, and a polished touch to your space - effortlessly.
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Wood effect frame, card mounted, 10x8 fade resistant photo print. Overall outside dimensions 14x12 inches (36x31cm). Environmentally and ozone friendly, 40mm wide x 15mm Polycore® moulding has the look of real wood, is durable and light and easy to hang. Biodegradable and made with non-chlorinated gases (no toxic fumes) it is efficient; producing 100 tons of polystyrene can save 300 tons of trees! Prints are glazed with lightweight, shatterproof, optical clarity acrylic (providing the same general protection from the environment as glass). The back is stapled hardboard with a sawtooth hanger attached. Note: measurements provided are estimated outer dimensions, which include both the image and the frame. While we aim to keep sizing consistent, exact dimensions may vary slightly due to differences in print size or production requirements, which may result in a variation in the overall size (up to approximately 2.5cm (1"))
These are individually made so all sizes are approximate
Estimated Image Size (if not cropped) is 18.4cm x 24.4cm (7.2" x 9.6")
Estimated Product Size is 31cm x 36cm (12.2" x 14.2")
