Data Item _em_2d_projection_selection.num_particles
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General 
- Item name
- _em_2d_projection_selection.num_particles
- Category name
- em_2d_projection_selection
- Attribute name
- num_particles
- Required in PDB entries
- no
- Used in current PDB entries
- Yes, in about 0.4 % of entries
Item Description
The number of particles selected from the projection set of images.
Item Example
840
Data Type 
- Data type code
- int
- Data type detail
- int item types are the subset of numbers that are the negative or positive integers.
- Primitive data type code
- numb
- Regular expression
- [+-]?[0-9]+