. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. THE NORMAL AMEBOCYTE IN LIMULUS 453 o D. •v -. FIGURE 6. Limulus amebocyte showing both major (asterisks) and minor (arrows) granules. Note the marked density of the latter. 6140X FIGURE 7. Detail of the two types of granules found in Limulus amebocytes. Major granules are marked with asterisks and the minor granules with arrows. 25,230X distant from the Golgi zone might instead arrive there secondary to the random move- ment of the total population of granules. Although not numerous, mitochondria are commonly found. Their d
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. THE NORMAL AMEBOCYTE IN LIMULUS 453 o D. •v -. FIGURE 6. Limulus amebocyte showing both major (asterisks) and minor (arrows) granules. Note the marked density of the latter. 6140X FIGURE 7. Detail of the two types of granules found in Limulus amebocytes. Major granules are marked with asterisks and the minor granules with arrows. 25,230X distant from the Golgi zone might instead arrive there secondary to the random move- ment of the total population of granules. Although not numerous, mitochondria are commonly found. Their dimensions vary from spherical (majority) to an elongated sausage-shape (minority). The matrix surrounding the cristae is quite dense and tends to obscure their membranes. The amebocyte does not have a well organized endoplasmic reticulum. There is no identifiable tubular smooth endoplasmic reticulum. Irregular and sparse elements of the rough endoplasmic reticulum can be identified by the surface coating of ribo- somes and the presence of more or less particulate material in the lumen. When seen, FIGURE 4. Two intermediate stages in the maturation of the secretory granules in the amebocyte of Limulus blood. Left is an earlier stage and right is an advanced stage, the matrix being condensed into discrete rods. 25,790x FIGURE 5. Granules of the amebocyte in Limulus shown in final stages of maturation. The matrix has become compacted into dense, intimately aligned rods. The rods have a less dense core (arrows). Typical Golgi secretory vesicles (GV) are present. Also seen are vesicles (asterisks) that may serve to accrete major secretory granules distant from the Golgi apparatus (see text discussion). They are characterized by a dense layer of material immediately under the limiting membrane. 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
Size: 1630px × 1532px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
