Microbiology Which of the following may be the only detectable serological marker during the early convalescent phase of HBV infection (window phase)? A HBeAg B HBsAg C HBcAg D Anti-HBc 💡 Explanation Which of the following may be the only detectable serological marker during the early convalescent phase of HBV infection (window phase)? ✓ Correct Answer: D. Anti-HBc