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Table 1 Summary of the localization of Neorickettsia in adult Plagiorchis elegans trematodes as detected by transmission electron microscopy (HPF/FS fixation), immunohistochemistry (IHC) or immunofluorescence (IF)

From: Ultrastructure and localization of Neorickettsia in adult digenean trematodes provides novel insights into helminth-endobacteria interaction

Body parts

Endobacteria localization

Remarks

HPF/FS

IHC

IF

Body wall

 Peripheral tegument

+

++

++

Density-dependent on the location of the tegument

 Inner tegument, subtegumentary perikaryon

+

+

++

 

 Parenchyma

+

+

+

 

Digestive system

 Oral sucker

na

+

+

 

 Esophagus

na

+

+

 

 Ventral sucker

na

+

+

 

 Proximal caecum

++

+++

+++

 

 Distal caecum

++

+++

+++

 

Reproductive system

 Seminal vesicle

na

na

++

 

 Ootype

na

++

++

 

 Ovary

na

+

+

 

 Vitelline glands

+

++

Mostly single bacteria

 Uterus

 

 Eggs

+

+

++

Mostly single bacteria

 Vas efferens

+

+

+

 

 Testis

++

++

 

 Spermatogonia

na

+

 

 Spermatocytes

na

+

 

 Mehlis’ gland

na

+++

+++

 
  1. Key: – not detected; + sometimes single endobacteria; ++ usually a few endobacteria; +++ many endobacteria, sometimes in high density
  2. na not applicable/examined