The garland cells are one of two groups of athrocytes in Drosophila in which extracellular serpin-family inhibitors involved in the innate immune response are taken up and degraded (see Soukup et al., 10.1371/journal.pgen.1000532). The image shows a broken ring of garland cells encircling the oesophagus above the proventriculus (Z-series reconstruction). Endocytosis has been frozen using a Dynamints mutation, allowing Necrotic (red) to be detected within the cortical labyrinthine channels of the garland cells. In a normal fly, Necrotic is endocytosed via the LpR1 trafficking receptor, processed through multi-vesicular bodies, and delivered to the lysosome for degradation.
Image Credit: Picture taken by Dr. Sandra Soukup in the laboratory of Dr. David Gubb (CICbioGUNE Institute, Derio, Spain).
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