WormBase Tree Display for Expr_pattern: Expr977

Expr977 Expression_of: Gene: WBGene00001148
    Reflects_endogenous_expression_of: WBGene00001148
  Expression_data: Life_stage: WBls:0000002
    Anatomy_term (44)
  Type: Antibody: Anti- EAT-20 polyclonal antibody.
  Pattern: Neither immunoblotting nor immunostaining analysis with the anti-EAT-20 polyclonal antibody detected any signal in eat-20 mutants. At the 16-cell stage, patches of staining on the entire surface of embryos were first detected. From the comma stage on, staining was detected in coelomocytes, the nervous tissues, hypodermal cells, and the pharynx. At the comma stage, the apical surface of the alimentary canal was stained intensely and the basal surface of presumptive pharynx was moderately stained. The staining in the presumptive pharynx gradually weakened thereafter and disappeared completely at the late 3-fold stage. The staining of the apical surface of the pharynx and pharyngeal intestinal valve remained intense throughout the rest of the embryogenesis stage. Granular staining in the region surrounding the pharyngeal lumen was observed from the L2 stage on and spread to the external surface. Staining of the entire surface of the pharyngeal muscle was observed in the late L3 or L4 stage. The inner linings of the intestine and anus were intensely stained until the 2-fold stage, and then the staining became weak and disappeared completely at the 3-fold stage. The anterior-most intestinal cell became stained from the L3 stage. Staining was also observed in the nervous tissues. At the rostral end of the head, staining that seemed to correspond to the distal segments of labial process bundles was seen from the comma stage up to the adult stage. In larvae, the staining sometimes extended posteriorly to the level of the isthmus. A pair of cells, which might be support cells of sensory neurons posterior to the distal structures, were stained from the L1 stage up to the adult stage. The motor neurons in the ventral cord, which sometimes expressed GFP in the promoter trap line, were stained at the early L1 stage. This staining disappeared at the late L1 stage and, in the later stages, was replaced by segmental staining of the ventral nerve cord. The nerve ring and the nerve bundles that connect the nerve ring and the ventral nerve cord had dots of very faint staining. On the lateral body wall at the base of the tail spike, staining was detected from the L2 stage up to the adult stage, which may correspond to the axon of ALN neuron that expressed reporter GFP in the promoter trap lines. In the adult male tail, sensory rays were intensely stained. There was also extensive hypodermal staining. Weak staining of the seam cells began at the 3-fold stage and the staining became intense from the L3 stage up to the adult stage. Thin longitudinal bands were stained along the dorsal and ventral midline from the rostral end of the body to the base of the tail spike, which corresponds to the position of the dorsal and ventral hypodermal ridges. The hypodermal staining co-localizing with the position of the ventral nerve cord was the most intense. The hypodermal cells at the opening and inside of the vulva were stained from the L4 stage up to the adult stage. The hypodermis around the anus was stained from the L2 stage up to the adult stage. The coelomocytes were continuously stained from the comma stage up to the adult stage.
  Picture: WBPicture0000011718
    WBPicture0000011719
  Reference: WBPaper00003907
  Antibody_info: WBAntibody00000267