. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 202 M. C. NIU AND A. LEIKOLA. FIGURE 1. A section through the implant of control. Note the presence of endodermal epithelial lining on the outer surface (at 10:00 o'clock) and two islands of blood cells on the lower left. < 120. FIGURE 2. A section through the L-RNA-treated implant showing intestinal vesicle. M, circular muscle. 120. RESULTS Development of the I'ntreated TPS (controls) A total of 60 fragments was excised. After being kept in the modified Locke solution at 2-4° C. for 15-18 hours, they were implanted into
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 202 M. C. NIU AND A. LEIKOLA. FIGURE 1. A section through the implant of control. Note the presence of endodermal epithelial lining on the outer surface (at 10:00 o'clock) and two islands of blood cells on the lower left. < 120. FIGURE 2. A section through the L-RNA-treated implant showing intestinal vesicle. M, circular muscle. 120. RESULTS Development of the I'ntreated TPS (controls) A total of 60 fragments was excised. After being kept in the modified Locke solution at 2-4° C. for 15-18 hours, they were implanted into the coelomic cavity. The explants were loose and fell readily into tiny pieces, thus causing some difficulty during the process of implantation. Histological examination revealed, however, that cells of the central mass were normal and those in the outermost layer became swollen or even broken. Of the 60 controls, 23 (38%) were recovered. The implants are either free or attached to the host tissue. Histological examination of the controls showed that the structures produced were limited to tissue with or without epidermal and/or endodermal epithelial lining. There was no appreciable difference between the untreated (control) and the treated series, thus showing that the slight damage to the outermost layer of cells, caused by keeping the explants overnight in the cold room, had no adverse effect on their developmental potentiality. To further demonstrate this point. TABLE I Developmental potentiality of the control posterior prim it ire streaks Conditions ot explain Growth Differentiation Attachment to host Size increased 3 or more times Total Epidermal Epidermal- feather buds Endodermal Gut Fresh controls (57) 14 3 7 5 1 5 0 Aged controls (60) 14 6 9 7 3 1 1. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
