Meanings of detectable p in English

The first group was kept on Earth normally and showed hardly any detectable p53 protein.

Follow-up after 3 months revealed a 1.87 log reduction in p210 transcripts compared to diagnosis and no detectable p190 transcripts.

Of 290 selected tumor samples previously evaluated for p53 mutations by single-strand conformation polymorphism, 90% had no detectable p53 alterations.