Figure 1From: A practical method for preparation of pneumococcal and nontypeable Haemophilus influenzae inocula that preserves viability and immunostimulatory activityViability of S. pneumoniae and NTHi over 8 weeks of storage at -80°C. The count on day 0 is a total bacteria count using a chamber (bacteria/ml), thereafter viable counts were conducted with the frozen bacteria to give LOG cfu/ml at 1 day, 1 week, 4 weeks and 8 weeks post-freezing.Back to article page