. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. COLONY SPECIFICITY IN PEROPHORA 177. FIGURE 20. A histological figure of nonfusion type B, after detachment of the two stolons. Many amoebocytes were observed in the lumen of the 1-stolon. epl, epidermal cells of the 1-stolon; ept, epidermal cells of the t-stolon; tm, test matrix. Scale bar = 50 ^m. Fusibility between different colonies The two types of nonfusion did not take place at random. A particular com- bination of incompatible colonies always exhibited only one type of nonfusion. We first tested the fusibility of a c
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. COLONY SPECIFICITY IN PEROPHORA 177. FIGURE 20. A histological figure of nonfusion type B, after detachment of the two stolons. Many amoebocytes were observed in the lumen of the 1-stolon. epl, epidermal cells of the 1-stolon; ept, epidermal cells of the t-stolon; tm, test matrix. Scale bar = 50 ^m. Fusibility between different colonies The two types of nonfusion did not take place at random. A particular com- bination of incompatible colonies always exhibited only one type of nonfusion. We first tested the fusibility of a certain colony to twelve other colonies. Of the twelve combinations, four produced fusions, five produced nonfusions of type A, and the remaining three produced nonfusions of type B. Next, six colonies were selected and fusibility among them was tested in all possible binary combinations. The results are shown in Table I. For example, Col. 1 fused with Cols. 2, 3 and 4. However, in the combinations among Cols. 2, 3 and 4, only Col. 2 and Col. 4 fused and the other two combinations showed nonfusion type B. When Col. 5 was combined with Col. 1, 2, 3 or 4, nonfusion type B occurred. In every combination with Col. 6, nonfusion type A took place. Histological observations of nonfusion Histologically, in either type of nonfusion, two kinds of blood cell were often observed near or on the epidermal cells of the contact area. They were amoebocytes. 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 Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual report 1907/08-1952; Lillie, Frank Rattray, 1870-1947; Moore, Carl Richard, 1892-; Redfield, Alfred Clarence, 1890-1983. Woods Hole, Mass. : Marine Biological Laboratory
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