Table 3. Functional analysis of differentially expressed proteins in the BALF of VAP⁺ and VAP^– patients.

Enriched in BALF of VAP+ patients
Gene Ontology Category	Number of Proteins	Enrichment P-value
Defense response	14	4.8×10–7
Protein binding	48	6.9×10–7
Calcium ion binding	13	9.0×10–5
Immune system process	14	9.1×10–5
Response to other organism	7	8.9×10–4
Defense response to bacterium	5	9.4×10–4
Leukocyte migration	4	1.4×10–3