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Fig. 5. Analysis of cilia in the ventricular system in 1-day-old mice. Brain
sections of a 1-day-old wild-type mouse containing the (A) lateral and (B)
third ventricles, (C) the aqueduct and (D) the fourth ventricle were analyzed
for the presence of cilia (anti-acetylated-tubulin, green; polaris, red) on
the ependyma (white arrowheads) and the choroid plexus epithelia (white
arrow). No multi-ciliated cells were evident on the ependyma of the (A)
lateral, (B) third or (D) fourth ventricles at this age. Ependymal cells
possess primary cilium, as shown by the SEM and immunofluorescence (inset in
A,E; yellow arrowheads). (C) By contrast, the ependymal lining of the aqueduct
was multi-ciliated (white arrowhead). Inset shows that multiple cilia are also
present in the mutant aqueduct. (F) Multiple cilia cover cells in the aqueduct
(yellow arrowheads). (G) Grouped and single cilia on the choroid plexus. Scale
bars: in A-D, 200 µm; in E-G, 10 µm.
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