nucleoplasmic periphery of the nuclear pore complex
nucleoplasmic reticulum
nucleoplasmic side of nuclear pore
nucleus lagging edge
nucleus leading edge
oral apparatus +
organellar chromatophore intermembrane space
organelle +
organelle envelope +
organelle membrane contact site +
organelle subcompartment +
organelle-enclosing lipid monolayer +
orthogonal array
other organism part +
outer dense plaque of desmosome
outer plaque of spindle pole body +
pairing center
paranode region of axon
pectic matrix
pellicle +
perforation plate
peribacteroid fluid
pericellular basket
pericentriolar material
perichromatin fibrils
perikaryon
perinuclear endoplasmic reticulum +
perinuclear region of cytoplasm +
perinucleolar compartment
periphagosomal region of cytoplasm
peripheral region of growth cone +
periplasmic space +
phagocytic cup +
phagocytic cup base
phagocytic cup lip
phagophore
phagophore assembly site +
photoreceptor distal connecting cilium
photoreceptor inner segment +
photoreceptor outer segment +
photoreceptor proximal connecting cilium
phragmoplast
phragmosome
pilus shaft
pilus tip
pinceau fiber
plasma membrane-derived chromatophore +
plasmodesmatal cytoplasmic sleeve
plasmodesmatal desmotubule +
plasmodesmatal plasma membrane
plastid stroma +
plastoglobule
podosome core
podosome ring
polar ring of apical complex
polar tube
polar tube anchoring disc
pollen aperture
polytene chromosome ectopic fiber
polytene chromosome weak point
porosome
post-anaphase microtubule array +
postsynapse +
postsynaptic endocytic zone +
preprophase band
presynapse +
presynaptic active zone +
presynaptic active zone dense projection
presynaptic endocytic zone +
presynaptic grid
procentriole
prospore membrane spindle pole body attachment site
proximal portion of axoneme
pyrenoid tubule
rDNA protrusion
recombination nodule +
replication fork +
reservosome lumen
reservosome matrix
reservosome membrane
retrotransposon nucleocapsid
rhoptry +
rhoptry neck
right lateral basal body pair
right middle basal body pair
right tetrad
ring centriole
rough endoplasmic reticulum cisterna
sarcomere +
satellite fibril
Schmidt-Lanterman incisure
scintillon
sculpture element
septin band +
sexine +
side of membrane +
sieve area
sieve plate +
site of DNA damage +
site of polarized growth +
smooth endoplasmic reticulum cisterna +
smooth muscle dense body
somatodendritic compartment +
sperm annulus
sperm end piece
sperm fibrous sheath
sperm head +
sperm head-tail coupling apparatus
sperm individualization complex +
sperm midpiece +
sperm mitochondrial sheath
sperm principal piece
spindle matrix
spindle midzone +
spindle pole +
spine mat
spongiome
starch grain +
stereocilia coupling link +
stereocilia tip-link density +
stereocilium base
stereocilium coat
stereocilium membrane
stereocilium shaft
The shaft comprises the majority of the length of the stereocilium. This region is notable for the extreme stability of actin filaments, which are highly crosslinked into a parallel bundle.
stereocilium tip
striated muscle dense body
stromule
subapical part of cell
suberin network
subpellicular network
subplasmalemmal coating
supramolecular complex +
surface coat of collagen and cuticulin-based cuticle extracellular matrix