Question 1

Why is locating these structures a sampling problem?

Accepted Answer

Because they are sparse and variable within any given cell, and imaging inside cells covers a small volume at a time. Without a strategy for finding candidate regions first, most of the imaging effort goes into empty cytoplasm. Correlative approaches that mark regions before imaging address this directly and are worth planning from the outset.

Question 2

Can a tagged particle stand in for an untagged one?

Accepted Answer

Not without checking. Tags placed on capsid or membrane proteins add bulk at positions that participate in transport, and reduced or redirected movement is a common consequence. Compare tagged and untagged particles on some measurable property, such as infectivity or yield, and report the comparison rather than assuming equivalence.

Question 3

How is a virus-built compartment distinguished from a recruited host structure?

Accepted Answer

By composition. A membrane structure that looks unusual may be a host organelle the virus occupied and reshaped rather than something newly assembled. Determining which host and viral proteins are present, and which lipids, separates the two readings where morphology on its own cannot.

Question 4

What controls does perturbing a transport route require?

Accepted Answer

Evidence that the effect is specific rather than a consequence of a struggling cell. Blocking a major route slows many processes at once, so include a measure of general cell health and, where feasible, a second perturbation that hits the same route by a different mechanism before attributing an effect to that route.

Question 5

Does the compartment genuinely shield genomes from sensors?

Accepted Answer

It is a reasonable interpretation but requires its own evidence. Showing that replication happens inside a membrane structure does not by itself show that sensing is prevented. Measuring the sensing response directly, with and without an intact compartment, is what supports the shielding claim.

Question 6

How much does cell type affect these findings?

Accepted Answer

Substantially, since membrane organisation and transport route usage differ between cell types, and immortalised lines commonly differ from primary cells in both. State the system used prominently, and treat compartment architecture described in one cell type as specific to it until shown otherwise.

Question 7

How should tomography data be reported?

Accepted Answer

With the number of structures examined stated plainly, since a single well-resolved example is an observation rather than a characterisation. Include acquisition parameters, the criteria used to identify a structure as relevant, and how many candidates were rejected, so the reader can judge how representative the presented data are.

Microbiology

Microbiology

Research Frontiers in Viral Particle Trafficking and Intracellular Compartmentalization